Advice pls: V.slow transfer speeds to external FW HDD ... but not always!

I've a WD MyBook Premium 320Gb external drive and I'm getting very poor transfer rates via firewire.
Most of the time I drag and drop multimedia files (mpg or avi) between Finder windows and I get transfers of around 300-350Mb/minute. However on two occasions recently the rate has increased to roughly 1Gb/minute. I can't account for why there is such a huge differential in transfer speeds in the same file type - and neither can Western Digital.
By way of comparison I get roughly 1Gb/m transfer speeds from a USB2 Sandisk flashpen to the iMac, matching the speed increase I've seen on two occasions via firewire.
So I guess the questions that arise are
1. what speeds should I get when transferring large files across firewire? I don't expect the theoretical 400mbps sustained.
2. would speeds be better using USB2?
3. what format should the external drive be and does it make a difference to performance? It's currently HFS+ Journalled though WD say that's not ideal.
Thanks
iMac Core Duo 1GB Mac OS X (10.4.7) iBook G3-800 & Airport §

I've been digging around a little more and I've found a CNET review of the most popular external drives and Seagate was worst but the MyBook wasn't too fast except for reading whereas the IOMega was the fastest for writing via firewire but not USB.
I think I'm going to have to live with the performance poor though it is for writing. Hopefully the format will improve things a little, if not it's one of the most attractive drive out there so I'll have to appreciate it for its aesthetics.

Similar Messages

Very slow transfer speeds with external hard drives through Firewire and US

Hi All,
My external drives transfer very slowly on my MacPro. I've been searching for answers and have turned up very little. Apple support suggested I post my issue here. Just to make a note, I measured my disk speeds with both AJA System Test and copying files between drives and reading the Disk Activity in Activity Monitor.
I have 3 external drives, all MyBook Premium or Professional, 1x 500GB, 1x 1TB and 2x 1TB in RAID 0. I had them on Firewire 400 and the RAID 0 2TB one on Firewire 800. My transfers on FW were all around 24MB/sec on all drives (much less than what I should be getting with FW400). I then read somewhere that the FW bus on the MacPro uses the slowest speed connected for all FW connections. So I unplugged everything but the FW800 Raid 0 drive and my transfer rate jumped to 40-60MB/sec. This is much better, but still about half or so of what I expect it should be producing from an external RAID 0 setup.
To keep my FW800 backup drive faster, I've plugged the other two into USB2.0. The transfer speeds on both drives are now hideous, around 10-15MB/sec. This is so slow, but I'm not sure what to try to fix my speeds.
The HD's in the external drives are all 7200rpm, and all should be transferring at a higher rate. Do you have any suggestions or ideas? Ideally I'd like to get everything transferring at rates they should be transferring at, but I'll settle with my current FW800 speed of 40-60MB/sec if I can get my other two drives transferring at a non-snail pace.
Is this a common issue? I can't believe I'm the only one plugging multiple external hard drives into their Mac Pro. I hope someone has a fix or solution for this. I'm all ears!
Thanks in advance.

Hi Kappy, thanks for the information.
So I rejigged my setup a tad. My RAID 0 is still FW800, the second drive is back on FW400 on the back port, and the third is USB 2.0 on the back as well.
It's interesting to note that I saw the FW800 taking a bandwidth hit if the FW400 drives was being read/written to. For example, if I was averaging 50-60MB/sec on the FW800 drives and copy something large to the FW400 drive, each drive averages out to about 30/MB second, roughly half the FW800 speed I was getting. The USB while the slowest didn't cause any slowness on the FW drives.
Here are my Xbench results. These results are from each drive being benchmarked individually with no other drives being tested at the same time.
*MyBook 2TB in a RAID 0 configuration: Firewire 800*
Results 75.42
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD My Book
Disk Test 75.42
Sequential 80.92
Uncached Write 69.16 42.46 MB/sec [4K blocks]
Uncached Write 110.79 62.68 MB/sec [256K blocks]
Uncached Read 53.66 15.70 MB/sec [4K blocks]
Uncached Read 136.76 68.73 MB/sec [256K blocks]
Random 70.62
Uncached Write 36.38 3.85 MB/sec [4K blocks]
Uncached Write 140.55 45.00 MB/sec [256K blocks]
Uncached Read 93.26 0.66 MB/sec [4K blocks]
Uncached Read 88.38 16.40 MB/sec [256K blocks]
*MyBook 1TB on Firewire 400*
Results 47.73
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD My Book
Disk Test 47.73
Sequential 52.47
Uncached Write 48.45 29.74 MB/sec [4K blocks]
Uncached Write 53.76 30.42 MB/sec [256K blocks]
Uncached Read 43.69 12.79 MB/sec [4K blocks]
Uncached Read 70.91 35.64 MB/sec [256K blocks]
Random 43.78
Uncached Write 17.29 1.83 MB/sec [4K blocks]
Uncached Write 98.83 31.64 MB/sec [256K blocks]
Uncached Read 76.33 0.54 MB/sec [4K blocks]
Uncached Read 97.01 18.00 MB/sec [256K blocks]
*MyBook 500GB on USB 2.0*
Results 40.60
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD 5000AA External
Disk Test 40.60
Sequential 35.99
Uncached Write 37.31 22.91 MB/sec [4K blocks]
Uncached Write 37.22 21.06 MB/sec [256K blocks]
Uncached Read 26.62 7.79 MB/sec [4K blocks]
Uncached Read 50.27 25.27 MB/sec [256K blocks]
Random 46.55
Uncached Write 20.37 2.16 MB/sec [4K blocks]
Uncached Write 68.44 21.91 MB/sec [256K blocks]
Uncached Read 93.55 0.66 MB/sec [4K blocks]
Uncached Read 86.71 16.09 MB/sec [256K blocks]
So Kappy are you saying that those speeds look normal?
Thanks

Slow transfer speed to external USB hard drive

I'm not sure if this forum is the right fit, but here goes. I'm trying to transfer files from a firewire external hard drive (partitioned as os x) to a usd external hard drive (partitioned as fat 32) but the transfer rate is very slow. I can watch the file count during the transfer and it only transfers one file about every two seconds (files are 1 meg each). Since I'm tranferring over 13,000 files it takes forever. Any ideas why transferring to a usb hard drive is so slow?

USB drives are slow to start with. If you have a USB 2.0 compatible drive (and the computer has USB 2.0 supported ports) you can expect average transfer rates that are about 60 percent those of FW400. To aggravate the matter your USB drive is formatted FAT32. That slows it down even more.
You could speed things up by putting the FAT32 drive in a Firewire enclosure in order to transfer files to it. Then return it to the USB enclosure in order to transfer the files to the PC. Or replace the USB enclosure with one that supports both FW800 and USB 2.0.
At the rate you observed (1 MB every 2 seconds) it should only take around 8 hours (which is considerably shorter than "forever"). Not much consolation, I know.
If you have no better alternatives and if both computers support 100BT or Gigabit Ethernet, then you might consider networking them and doing the transfer over Ethernet. You might actually achieve faster transfer rates than using the USB drive. 100BT Ethernet should be able to move the data around 3-4 MBs/second which is about 6 times faster than what you're now observing.

External firewire hard drive reverts to slower transfer speeds

This is the strangest hardware problem I've come across. I'm running a unibody mbp (June 2009) with an external WD 2.0TB Caviar Green drive mounted in a firewire 800 enclosure made by icydock.
Lately, I've noticed that after an unknown amount of uptime, the speed of file transfers to the WD external drive slows down dramatically. I figured this out by watching my time machine transfers take a bit longer after awhile, and I verified this using aja system test and speedutilities.
When I boot my mbp in the morning, file transfers and time machine backups to the external WD transfer at a rate of about 67-75MB/s. This is the speed the drive should always be working at since it's connected via firewire 800. Aja speedtest verifies the speed is as it should be as well.
Then, after a couple hours of using my mbp, or even later in the day, I'll transfer a file to the external WD or run a time machine backup and find that the transfer will only run at a max of 29-35MB/s. This is exactly half the speed the transfer should be going at. Subsequent transfers stay at this slower rate no matter what I do.
However, I've been able to fix this problem by unmounting and remounting the external WD or restarting my mbp. After doing either of these actions, the WD external goes back to contant transfers at 75-80Mbs. So something is happening where the longer the mbp is running, or after some sort of disk activity, the external WD reverts to a slower transfer speed (closer to FW400). I can't isolate whether it's an issue on the mac os side or the hard drive or the hard drive enclosure because I can make the hard drive go back to optimal speed again merely by unmounting and remounting it. This works consistently until a few hours later when the drive begins to handle transfers at half speed again.
I run hourly time machine backups to the drive. The time machine backups can't be the culprit because the drive remains running at optimal speed after the backups (verified with aja system test and speed utilities)
Any possible ideas as to why the drive cuts down to half its optimal transfer rate after a bit of time? I can't figure out the cause of this, and the consistency of the drop leads me to think this is an issue with the power management on the drive since it reverts to full fw800 speed when I umount and remount the drive or restart my computer. Could this be an OSX issue where for some reason the system isn't negotiating the fastest speed?
Any help appreciated.

From the SoftRAID manual:
Fire hubs and disk drives. FireWire hubs are notorious for introducing errors and instability onto the bus.
Make sure that all of your consumer electronic devices (iSight, cameras, scanners) are connected to a separate FW bus. These devices are not built to the same standards as storage devices and known for introducing errors onto a FW bus.
Cables. While most cables work fine with a single device, many cables will introduce errors when 2 or more disks are connected to the bus.
http://www.softraid.com
http://www.softraid.com/demo.html - manual and demo
Output can be to any drive or partition. When you lauch iMovie it asks where to store your project.
I just bought a camera, and curious myself to see if I can take 10 minute clips and use iMovie/iDVD so that it will auto-play. I may end up buying Pogue's "iMovie Missing Manual" or something.
iMovie Discussions

Slow Transfer Speeds For File Transfer Manager 5.0 Build 0032

I have a 20Mbit internet connection. When I download from the Microsoft download site I can get files downloading at reported speeds of up to 1.7 Mbytes per second.
When downloading from the TechNet Benefits section I have to use the Transfer Manager and I can only get speeds that vary between 30-80 Kbytes per second. Rarely any faster.
I am using XPPro & IE7 straight out onto the Internet via my router / firewall. No proxy server.
What can I do to speed the process up or bypass the File Download Manager?
Regards.

Thanks for your feedback Tekky. FYI there is also a forum specifically for TechNet Website Feedback which is the more appropriate place for TechNet Subscriptions questions at http://social.technet.microsoft.com/forums/en/tnfeedback/threads/
There are many suggestions in this post about improving your network speeds when downloading from MSDN and TechNet subscriptions sites. Here is one more place to look for tips, which we have linked to from our Downloads and Product Keys FAQ (MSDN version, TechNet version):
The website for the Microsoft File Transfer Manager, particularly their troubleshooting page which includes additional discussion on configuring the FTM and on slow transfer speeds.
As Julie stated above, you can call TechNet Customer support and they can take you through some additional troubleshooting and diagnostic steps to assist. Julie has linked to the support phone numbers in her reply.
Thanks,
Mike Kinsman

Slow transfer speeds between Mac Pro and Shared Drive on Windows Domain

Hi Guys,
Getting really slow transfer speeds when I try and transfer a file from a Mac Pro to a shared network drive on one of our Windows 2003 Servers.
The Mac Pro is logged on to windows domain. This data is transferring via our hard network, not via wireless. Not having any other transfer speed issues on any other PC's.
For example an 8mb file took around 45 mins.
Hope you can help. Many Thanks.

I saw this at a site where they were using DFS with Server 2003. When the few Mac's they had connected to the actual server and uploaded the file it was okay. But when it was sending the file via the \\DFS_node\share_name the Mac took heaps longer for the same file. Watching the Activity Monitor > Network monitor you could see gaps with the data transfer, as if there was some pausing between packets. A pcap showed that there was constant DNS requests coming from the Mac, even after the connection to the share was made. The same wasn't happening when the connection via SMB was directly to the actual file server. As there was only a few Mac on site they left it with the direct connection but were getting an MS specialist in to look at it. Never heard what happened with that one but you may want to try monitoring the packet transfer to see if the data movement is contstant or breaking. I'd also recommend getting Wireshark to monitor the transfer. You can compare upload to download and maybe even the transfer from the Mac to an MS workgroup share.

I know i can slow down speed in a movie clip but can i and how do i slow down a transition clip? specifically the scrolling credits. it goes so fast i cant read it

i know i can slow down speed in a movie clip but can i and how do i slow down a transition clip? specifically the scrolling credits. it goes so fast i cant read it

never mind i found the answer

External hard drive, error -36, corrupt files and slow transfer speeds

This is a long post but stay with me.
I've got an external 250GB Lacie drive connected to my 24" Intel iMac via Firewire 800. I have approximately 80GB worth of files (including my iPhoto library) on the Lacie that I'm trying to move over to my iMac but have run into some frustrating problems.
Overall, transfer speeds are erratic – fine at times and SUPER SLOW (5 minutes to transfer a 3MB file) at other times. At first I was transferring entire folders, but after always getting errors (error -36 to be exact), I was having to transfer individual files. This works fine as long as the files aren't too big (which makes the transfer speeds SUPER SLOW) and not corrupt (which gets me an error -36). Is my Lacie crashing on me? Is there any hope?
Here's what I've done to try and salvage my sanity with no resolve to my problems (not exactly in this order):
1) Ran Disk Utility to repair Lacie. Everything came back OK
2) Ran Disk Warrior on Lacie. Found a handful of bad items that Disk Warrior was able to repair. Had Disk Warrior replace the old directory of the Lacie with the new directory.
3) Ran Drive Genius: Raired and Rebuilt the directory, did an Integrity Check (came back OK), attempted to Defrag but could not because of errors to the drive, did a Scan for bad blocks (which after running for 3 days! it was only 20% complete and had found over 150 bad blocks, at which point I quit to try something else)
4) Checked that my Firewire cable was properly connected and replaced the older one I was using with a brand new one.
5) Disconnected all peripherals except for keyboard, mouse and Lacie.
6) And at times, even viewing a file on the Lacie has caused my Finder to crash, requiring a restart of my iMac.
I'm sure I've left something off I've tried but you get the idea.
I've read that maybe I can transfer my files using Terminal. Yes/No? Does this bypass any corruption the files may have?
What about creating a second partition on the Lacie and moving files over to the second partition? Does this solve anything? I don't know anything about partitioning so maybe I'm talking crazy.
I've also read that iPhoto tends to corrupt files which makes me hate iPhoto, and myself for not backing up.
And I've read a lot about error -36's and none of it sounds good so I'm just hoping that someone might have other suggestions for me to try and save my files (especially my iPhoto files which include baby pictures that if I lose, my wife will kill me).
So if anyone has any ideas, let me know. Please. I'll try anything.

Hi Aaron Thompson-
I am fairly certain you have a bad power supply brick to the LaCie drive. This is a hard problem to troubleshoot as generally when the bricks go bad they do so slowly and the drive appears to power up and stuff but it just doesn't work.
If the drive is under warranty LaCie will replace the brick at no charge. Otherwise they sell them for around $20US on their website.
Luck-
-DP

How do I fix the slow transfer speed over USB on my 24" iMac?

I am backing up/cloning with SuperDuper, and running Lion. The displayed transfer speed never gets past about 20mb per second. Painfully slow.... Any suggestions?

Actually that's pretty good for USB. USB is slow - there is nothing you can do about it. Firewire always has been faster. Personally, I only use external Firewire drives for cloning or backing up. Even then, if it's a fresh clone, it'll take moe than an hour for 160 GB.
So, I schedule it when I have other things to do and walk away until it's done.

Too slow transfer speed for Toshiba 3.0

Hi there
i just purchased a toshiba 3.0 external hdd.
I use windows 7 genuine.
My pc specs are pretty ok cos i am able to run heavy games like crysis 2.
The problem is, My external hdd has slow transfer rates. This problem i started facing aroung 3 months ago. My hdd is out of warranty.
My USB ports are ok and i connect it to primary port.
The transfer speeds are just around 10MBPS and sometimes it drops to KBPS!!!!
Also, it does not copy some files and gives error "Failed to read from source disk" or something like that.
There is no Virus in it, I have enabled write-cache. I have defragged it.
My OS is fine and also, i checked it on other OSes.
Also, i have tried using "check disk for errors" with proper procedure but it hangs somewhere in the middle after it processes 500000 sectors or so.
I got my HDD from my cousin as he no more used PC and without any cover so i dont have any idea of model (although if there is any utility to find model then please notify me).
Also, it worked fine during then. Me and my cousin are from India only.
How can i fix this issue?
Please help me.
Message was edited by: Jaskaran
null

Please dont understand me wrong but if the case is urgent call Toshiba hotline in your country or contact nearest Toshiba service provider.
This is user-to-user forum only.

Very slow transfer speed between 2 computers in the same network

I recently bought a new laptop (Lenove G510) with win 8.1 pre-installed.
When i download files of the internet, my speed is ok, for wireless, but when tranfering files between computers (The other computer is a win 7), the transfer speed is really slow (2-4 MB/s). The transfers takes forever, and are relly unstable. It bounces from 1 - 4 Mb/s all the time and will not stabilize.
The same applys when streaming to other devices (Media Center). The video being streamd will just go frame by frame, and it is no fun watching...
Why is my transfer speed in local networsk so slow?? How can i fix this?
I use AVG Anitvirus, and I have tried disabeling it before transer, whitout results...
I have also updated BIOS, Chipset and the driver for the wireless network card...
I can also mention that when I turn my computer on, the internet connection is lost to all other devices... I then need to reset the router, and then the connection is fine again. This was never a problem before I got Windows 8.1, and is not a problem while the computer is turned of.
In advanced, thansk for any replys/tips
Regars, Morten

Just to be sure it's set up properly, please work through the steps on this page:
http://homepage.mac.com/rfwilmut/notes/sharing.html

V. Slow transfer speeds with new dual band Airport Extreme

I have a new Airport Extreme (late 2009, dual band, full 'N' spec) which I am using to replace an older Airport Extreme (early 2008, 5Ghz, 'draft' N).
I have a USB disk attached and was interested in benchmarking the transfer speed of the new Extreme, compared to the previous version. The results are puzzling / alarming.
Shown below are transfer speeds (file copied to the attached USB drive) under different connection standards (2.4Ghz / 5Ghz & a/b/g/n)
'Old' Airport Extreme
5Ghz - 'draft' N : ~5-7 Mb/sec
'New' Airport Extreme
2.4Ghz - b/g : ~3-5 Mb/sec
5.0Ghz - a : ~3-7 Mb/sec
5.0Ghz - N : ~200 Kb/sec
Hence transfer speeds appear to collapse when I try to make use of the 'N' spec with the latest Extreme. I have tried altering items such as - wide channels (on / off), interference robustness (on / off), 5Ghz channel (manual, instead of auto), with no upside.
I seem to be at the point of concluding that either
1. I have a 'broken' Airport Extreme
2. The WiFi card on my early 2008 iMac (which implements I guess the 'draft' N standard) is 'incompatible' with new the Airport Extreme under a 'N' connection.
Any thoughts ?

Since all devices in my wireless network are capable of latest 802.11n protocol, I really do not need older and slower 802.11a/b/g protocols. To achieve above 200 Mbit/sec, 5GHz band with wide channel option turned on is really necessary. Thus I really wish I can turn off the 2.4GHz radio band (seems Apple has set this band as default) of my new dual band Airport Extreme to avoid unwanted bandwidth degradation. Unfortunately this is not possible with radio mode setting in Airport Utility.
The best I can do to force connection with 5GHz radio band (with quite consistent result) is as follows:
On Airport Extreme through [Airport Utility>Wireless] :
Radio Mode: 802.11n only (5Ghz) - 802.11b/g/n
More Options>Wireless Network Option>Transmit Power: 100%
More Options>Wireless Network Option>Use Wide Channels: checked
More Options>Wireless Network Option>5 GHz Network Name:
checked and same network name with extra suffix "(5 GHz)"
On 27" iMac through [System Preferences>Network>AirPort>Advanced>AirPort]:
Preferred Networks:
Create only one profile in Preferred Networks for the above network name with suffix "(5GHz)"
Uncheck the option [Remember networks this computer has joined] to ensure there is only one profile under Preferred Networks .
Once all above settings are done, restart Airport Extreme in Airport Utility. Your computer should connect wirelessly to the base station through 5GHz band after booting most of the time. Even when it is not occasionally, simply go to the Airport icon in main menu bar and click on the network name with suffix "(5GHz)" in dropped-down list to connect manually. With all these settings, I have achieved 300 Mbit/sec bandwidth on my iMac most of the time for fast Time Machine backup.
How I wish feature for better radio mode control by end user will be implemented in next update of Airport Utility. Apple should trust end user's brain better than artificial intelligence (or ignorance ?) in wireless network implementation. Wireless traffic between the two radio bands and among various wireless devices should be segregated specifically in Airport Utility by end users whenever dual band Airport base stations are in use.

Advice needed about slow broadband speed

Hi there,
I was wondering if you could help me. I live in the countryside and wouldn't you guess it, I get slow internet speeds. Obviously I don't expect superfast broadband but I just want to see if there is any other reason to my slow speeds other then my distance from the exchange (which I believe is 4.3Km, a long distance I know).
I am posting my router statistics (BT HomeHub 3) and the BT Wholesale Performance test report. Essentially I am curious whether old wiring or noise on the line is playing an issue. I'm certainly no expert but my home is quite old and I'm not sure when the wiring was installed so I'd really appreciate any advice. I've also just emailed BT Customer support about resetting the IP Profile as it has been extremely slow ever since the outages due to last weeks weather playing havoc. Any advice appreciated.
Thanks very much.
Nick
ADSL Line Status
Connection Information
Line state: Connected
Connection time: 4 days, 11:07:43
Downstream: 2.125 Mbps
Upstream: 448 Kbps
ADSL Settings
VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.1 Annex A
Latency type: Fast
Noise margin (Down/Up): 5.8 dB / 12.0 dB
Line attenuation (Down/Up): 63.5 dB / 31.5 dB
Output power (Down/Up): 17.2 dBm / 12.3 dBm
FEC Events (Down/Up): 0 / 91
CRC Events (Down/Up): 6871 / 77
BT Wholesale Broadband Performance Test:
Download Speed (Mbps): 1.25
Upload Speed (Mbps): 0.31
Ping Latency(ms): 43.88

Thank you for such a fast reply.
There is the further diagnostic test below. The strange thing is I was getting around 3-3.5mbps downstream a week ago but with the frequent disconnections due to the weather I have a bad feeling the exchange has downgraded my line.
1. Best Effort Test:
Download Speed : 1.5 Mbps
Your speed test has completed and the results are shown above, however during the test an error occurred while trying to retrieve additional details regarding your service. As a result we are unable to determine if the speed you received during the test is acceptable for your service. Please re-run the test if you require this additional information.

Slow transfer speeds between two macs

The general setup: an iMac Intel 20" and an iBook G4 1,2GHz connected via an Airport Express (newest edition), both computers running 10.4.7.
When trying to transfer files via AFP between the two on my local network, I get "tremendous" speeds of about 0.5-1 MB/sec. Why is this so incredibly slow? Is it because of encryption or something similar? I can download off the internet with greater speed than that!

i have exactly the same problem , using a macbook black g1 . slow network speeds and flakey internet . these were ok when I first got the machine . but are now slow as . using the network view of menumeters I see that if i try and shift files from my mac mini they are incredibly slow with menumeters show 0.0kb/s for seconds at a time .
to trouble shoot this problem I used another friends macbook configured with exactly the same settings on this network and the transfer speeds were as they should be which was about 1.5-2.5 megs/sec .
so i figure there is some preference corrupted but which one ?
I have experienced several crashes recently . because of the overheating bug I have the fix applied to my machine and the firmware update . Maybe the network preference got corrupted at that point .
any tips as to which preference to delete would be appreciated .

Slow transfer speed

Hello, I have a few years old WD MyBook Live 2TB and I haven't used it much since I bought it (new).The problem is, that transfering speed is ultra slow. It can't go past 4MB/s and that's max. And after all, I even tried connecting it directly to my pc via LAN, but still no chances going beond 4MB/s .. My USB 2.0 is faster.I heard this product has really bad processing unit inside and thats the reason for all that, but still, has anyone figured out after all those years, how to fix this problem? After all with that slow transfer rate, it's unusable.. Thanks!

Well, what is then? I'm using utp cable which was included in the box and I have Broadcom 802.11 ac adapter in a laptop with i7 4700HQ and 16gb of ram.. I don't see the problem on my side. And like i said, i connected it straight in to the laptop, so no router between.

Advice pls: V.slow transfer speeds to external FW HDD ... but not always!

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