Ext. HD sometimes USB 3, sometimes USB 2

I have a Hitachi Touro pro with USB 3 when this is drive is used for booting it will accessed with USB 2 speeds. This then also shows in 'About this Mac'. If I boot from e.g. the internal HD then the Hitachi is accessed with USB 3. (I don't have any USB 2 devices attached)
Is this normal behaviour?

I think I answered my quiestion via an article on the Macworld web site:
http://www.macworld.com/article/2039427/how-fast-is-usb-3-0-really-.html
Now this is assuming that Macworld is unbiased.
USB 3.0 is faster but not by much, maybe 2 MB/s at the most.

Similar Messages

Can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

stephan ach wrote:
but i read that there are lots of problems with the new macbook pro. i have all my data on ext. la cie hard drive. i wont have a problem reading them?
What problems specifically? If you have a problem you should start your own thread and explain the problem in detail.
External USB devices including hard drives and DVD work fine on the new Macbook Pros.

USB 2.0 port no longer recognizes ext. HD; USB 3.0 seems fine W510

Have had several BSODs in last few days. Two of most recent referred to nusb3xhc.sys
Other symptoms: I have 3 WesternDigital 500GB ext. USB 2.0 HDs none of which are being recognized even when plugging directly in to laptop USB port rather than USB hub I usually use. Same USB port will show a small thumb drive. USB 3.0 laptop port still works. While the WD HDs are all older, worked several days ago but now never show up in Windows Explorer and the tray icon for USB never shows them as I typically click on the latter to eject an ext. USB HD.
Recent changes to laptop:
1) 6.1.2014 installed MS OneDrive (and also on tablet). version 17.0.4041.0512
2) Control Panel add/remove programs shows that Dropbox installed version 2.8.2 just before OneDrive
3) Subsequent to above I did routine Windows update of Important items with no problems. However for several years since about IE 9 or perhaps 10, I have been unable to get IE to install and work, and have been using Chrome for years. I mention this to give fuller picture, but doubt that it is related to current issue.
4) Aside from typical routine updates e.g. Java, Bitdefender antivirus I have not intentionally installed any other software recently.
============
I have barely begun using MS OneDrive so am happy to uninstall it, or go to restore point prior to its installation. BSOD prior to this might have occurred 1 or 2x per year.
I'm pretty good at following directions if they are complete e.g. need full path if you want me to find something on my HD.
Lenovo website for machine type 4318CTO running Windows 7 Pro 64-bit indicates that driver version for USB 3.0 dated 1/22/2010 versin 1.0.19.0 is up to date and that it is NEC device. Device Manager also says is up to date. There is one USB 3.0 port on rear of laptop and two USB 2.0 on side. HP website shows more recent NEC USB 3.0 driver dated 9/16/2011 version 2.0.32.0
Thanks for your knowledge, skill, and help.

I always thought that high-speed USB was USB 1.1. I thought that USB 2.0 was full-speed. But my iMac Core 2 Duo has USB 2.0 (I'm sure) and it says that my iMac has a USB High-speed bus.
Your PowerBook G4 might need service, go to your local Apple Store and see someone there about it. I'm pretty sure that you have a hardware problem.
Steps:
1. Try connecting another USB 2.0 device to that same port. If the device works you have a problem with your iPod. (This is a long shot.) If this happens you should reinstall iPod software.
2. Try reinstalling iTunes.
3. Try calling AppleCare technical support.
4. Try reinstalling Mac OS X. (If AppleCare hasn't told you do this already.)
5. You have a hardware problem. Go to an Apple Store to get it fixed.

Toshiba Ext.HDD 320GB USB wire not working?

So I have a Toshiba External Hard Drive that connects plug and play via USB 2.0 wire Male A to Mini B. Problem is, is that I have about 5 usb 2.0 wires all ranging from 2feet - 6feet in length and absolutely none of them work. I used to have one that worked it seemed a bit thicker than other USB 2.0 wires but lost it and am using a friends 6 inch us 2.0 wire that works fine but seeing as it's his I need to acquire a new one. I don't want to waste money on a wire that won't work so I was wondering if anyone at all knew what the problem seems to be. I have searched the internet for the solution as well as went to the local tech shop and they had no clue what the heck was going on. The man there said it was probably the length of the wire but the original USB 2.0 wire I had was about 2.5 feet in length and it worked fine. It's not a problem with my ports seeing as my frineds works in all the ports and not a problem with vista obviously seeing as yes, it works. I just need my own USB 2.0 wire and need not to waste money on something that won't work. Anyone with a solution please? Thanks!
*the hard drive powers up with the wires I have but Vista won't recognise it*
*the drivers do not need to be installed seperately seeing as it is plug and play and has all drivers on the hard drive itself.*

Check all usb cables to learn if signs of wire crimping/bulge is observed, those need to be replaced. Length not too much of a problem these days. Generally, belkin have good cable units. If there is too many plugged into the laptop could cause non-working conditions and recommend a usb hub to be utilized, worth a check out. You could also deinstall the USB controllers via Device Manager and reboot, let hardware wizard reinstall.
On the external HDD not recognized, put the disc that came with the device. When not recognized no driver is on board yet, but you will still get some sort of indicator of an attempt at install. Try putting usb into the laptop after it has been operational. Check Computer to see if it is recognized, and take off all other external usb units.

Problems with usb / sd removable devices (not/badly copying)

Hi everybody
the problem is when I plug an usb stick or a SD card, all with FAT32 fs, GNOME (I use gnome-shell) asks me if I want to mount and open the device.
so, it loads properly and when it's open I can do all the things you are supposed to do with them.
The issue first appaired when I copied some pics to an SD card. It appaired the progress bar saying it completed the copy process.
So I umounted the device and removed it. Some other people said that actually there weren't any files in the SD card.
Supposing it was bad/corrupted fs I formatted the card and put back the images there. Same issue. I was starting to think the SD card was damaged
until I had the same problem while copying music to my phone (via USB cable).
I noticed it created all the files but didn't store any actual data (e.g. size of files was always 0 byte) or even didn't do anything (neither created the file) sometimes.
Searching the web I found that it wasn't syncing - so they told me to do the sync command on the shell - nothing solved.
So as I read on the wiki [fstab], I mounted the devices with options "sync,flush", which in fact solved the problem.
[Actually I later found that it works even without the flush option, just with the sync option]
Doing so I solved the problem and could copy all the data to the devices.
What I want to know is: how can I say to GNOME (or anyother GNOME uses to mount devices) "well, whenever I put a removable device, mount it with the sync option" ?
thank you in advance,
azzka
PS: [not so important]: I noticed very slow copying bitrate, and I did what the wiki says about but didn't solve anything. Any ideas?

Yep HV,
Verify the discs in the disc utility and see if that works. It'll probably take an hour or so cos the disc utility's performance has been less than favorable.
Try this: Turn off the computer, disconnect the drives, then restart the computer. Now, re-connect the drives while the computer is running, let them mount and see if you can eject them. One would assume it is a permissions issue, however, with the multitude of glitches appearing with ext drives and USB devices in Leopard it's hard to assume anything.
Persevere!

USB powered HDMI to AV convertor getting power from AppleTV USB?

Hi,
I have bought a AppleTV and a Mini White HDMI to AV CVBS Video Converter Adapter 1080P KIT so that I can use my AppleTV with my older non-HDMI television. This is what I bought:
http://www.ebay.co.uk/itm/Mini-White-HDMI-to-AV-CVBS-Video-Converter-Adapter-108 0P-KIT-FORTV-PC-PS3-DVD-/221151573187?ssPageName=ADME:L:OC:GB:3160
As you can see in the pictures it requires power from a mini USB cable. I have a mains to usb plug that I can power it with but I was wondering if I could instead hook up the 2 devices with a mini usb to mini usb cable so that the convertor would get its power from the AppleTV. Would that work? Or would it fry the AppleTV and maybe both devices or would the AppleTV just not supply power at all out of its mini usb port. I know it is only intended for maintenance with iTunes.
I have found mini to mini usb cables on ebay:
http://www.ebay.co.uk/itm/Mini-White-HDMI-to-AV-CVBS-Video-Converter-Adapter-108 0P-KIT-FORTV-PC-PS3-DVD-/221151573187?ssPageName=ADME:L:OC:GB:3160
So what do you reckon?

I honestly don't know, but I suspect AppleTV does not have a powered USB port and is more like a peripheral (eg ext 2.5" USB drive) that draws power from a computer or hub.
Another potential problem is that ages ago I read that due to the very close proximity of USB and HDMI sockets it may not be physically possible to have both connected at the same time.

Disconnecting USB Hub

Hi all.
Im a brand new 17inch Macbook owner and know very little. I have bought a Belkin 7 port USB hub so i can connect all my devices to my macbook as I pretty much use it as a desktop replacement.
Connected to the hub will be:
* ext hard drive
* usb flash key
* iphone
* wireless logitech keyboard
* probably some other stuff down the line too.
I'm wondering how i disconnect the usb hub when i want to take my laptop somewhere. is it a matter of disconnecting each device or the hub itself?
The hub says it can do 'hot switching' but I have no idea what that means.
Any advice would be much appreciated.
Thanks

The best practice way to go with this would be to "eject" anything that creates a shortcut on your desktop (HDD, USB Key, Iphone etc.) before removing anything.
Once you have done that, you can simply unplug the hub from your Mac.
Anything that can suffer from data loss, like storage devices of any sort should be ejected properly just in case it is being written to at the time of disconnection.
To eject just right click the icon on the desktop and choose "eject" the icon will then dissappear. They will remount when you connect it all up again, and the icons will reappear on your desktop.
Stuff like Keyboards and Mice can be plugged in/uplugged at will without harmfull consequences.
Hope this helps
Jerry

Delete from disk+move to ext. disk error!??

This is so strange!
When i hit backspace and select "delete from disk", it "removes" it from lightroom, but it is still in the finder, and when sync folder, it reappears? So annoying, having 2000 useless files wanting deleted, mixed with 10 that cannot be lost.
Some folders, when trying to move them inside LR, to an ext. disk, it creates the folder on ext. disk, sometimes with none, one or two files - never more. And then this appirs "Could not move files, and unknown error occured" inside LR.
And I cannot rename folders.
Please help.

_marc_b_ wrote:
A clever way someone else suggested recently:
Synchronise the folder - all the deleted photos will be reimported, and will be added to the "Previous Import" collection
Select all the photos in the "Previous Import" collection and delete them
Marc
Yes, if there are a lot of images, that is obviously quicker.
Bob frost

PB G4 15" Using FW direct won't clone to ext FW drive using iMac CRT (G3)

Info:
PB G4 15" 1.5, 512 mb ram, original 80gig internal HD having sleep issues (meainging it will go into sleep mode whenever it wants and will not stay "awake")
iMac CRT G3 as stable platform, still running strong after 6 years :^) !!
Both are still running (ugh, I know) 10.3.9
I recently purchased an IBM/Hitachi Deskstar 3.5" 80 gig HD and an no-name-brand 3rd party ext. FW/USB 2.0 drive enclosure to (hopefully) clone the G4 15" PB and wipe out it's drive and start from scratch to see if it's a OS issue rather than a hardware issue causing my sleep issues.
I originally partitioned the PB 15" HD to have 3 partitions and the cloning process SEEMED ok on the non opertating system partions, but carbon copy cloner is having problems with any folder larger than 4 gigs, e.g., a VPC drive image doesn't clone properly, CCC only cloned 1 gig whereas my VPC image is about 6 gigs, also, my applications folder, which is approximately 5 gigs on the PB G4 15", hangs when CCC tries to clone it to the Ext HD drive.
Did I shoot myself in the foot by buying a non-name-brand Ext Hd FW/USB enclosure? Are there jumper settings on the Ext HD that I should pay attention to? I currently have the Deskstar HD set to "Primary," Disk Utility partitions the ext HD ok and First Aid results in no ploblems. Is my iMac DV 500mhz too slow to keep up with the cloning process? I only have 256mb ram/original 20gig HD.
I've heard/read that 10.3.6 and up causes problems with ext HD FW/USB enclosures.
Any help would be greatfully appreciated!!
Greg
PB G4 15" 1.5 Mac OS X (10.3.9) iMac, Pismo, PB 1400cs, Apple ][+

Hi, mattn.
Here's a better idea. Erase the external drive. Clone your brother's internal hard drive to it as a backup. Test to see whether the Powerbook will boot normally to the clone. If it doesn't, stop right there and run a full battery of first aid and repair utilities on the internal drive, then clone it again and test again. If all tests on the internal drive are OK, your external drive enclosure(s) may just not be bootable — some aren't.
If the clone on the external drive boots the PB with no problems, upgrade the internal drive to Tiger so your brother can put it through its paces for a couple of weeks. If he likes it and decides to keep it installed, clone the internal drive again to the external drive, so Tiger and any work done in the interim is backed up. If he wants to stick with whatever older OS he was using, erase the internal drive and clone the external drive back to it. In the latter case, be sure to make a separate backup of any documents that have been created or modified during his trial period, before restoring the older clone to the internal drive.
Note that a Powerbook with Firewire 800 is Aluminum, not Titanium, and there's a separate set of forums for the Albooks:
http://discussions.apple.com/category.jspa?categoryID=135
Any future questions related to the Powerbook's hardware should be directed there to reach the folks who are most knowledgeable about those models.

USB sometimes does not work

Sometimes all the USB ports that I have are not working.

Hey patvedo,
Thanks for the question. I understand that you are experiencing issues with USB on your Mac Pro. The following resource may provide a solution:
USB and FireWire Quick Assist
http://support.apple.com/kb/ht1151
Thanks,
Matt M.

USB Printer Sometimes Not Recognized on Reboot into OS X from Windows XP

Thanks in advance for any help. Here's the situation:
Everything works fine in OS X (10.5.2). In particular I have a USB laser printer that works find (Brother HL 2040).
Then I boot via Boot Camp into Windows XP and play a few games. Then I reboot out of XP and back into OS X. At that point sometimes the printer works and sometimes it doesn't. When it doesn't work what happens is that I will send a page to be printed, but nothing happens. Then when I shut down (or restart), the page will print.
I'd like to be able to print without having to shut down the computer - any help would be appreciated!

Though a different USB device (myTV.PVR) I have somewhat similar problem in Leopard, Windows (Vista). If I try to watch TV in OS (x) after having used it in (y) it will not work. Solution for TV is to pull device's power or USB out & put it back. Seems like the driver sees something foreign to it which is
re set by re plug.

Missing sound + missing USB power (sometimes) from Thunderbolt Display when waking from sleep

Hi
Two problems - one of which is driving med crazy!!
Have the latest updates, and the display is connected to a MBA (mid 2011).
The two are almost alwayes connected, and every time I wake the MBA from sleep, the Thunderbold Display does not "support usb sound" - the sound options are only MBA and headphones. Only a restart will give me the option to use Thunderbolt as sound output: WHAT TO DO!?!?!!
Sometimes when waking from sleep the USB in the Display seems to be "off" - the will not charge my devices (iPhone, iPad etc.). Only reboot seems to fix this... I have seen this in other discussions but not found a permanent solution - any thoughts?

Same here but reinstalling OSX is a bit drastic. I solved the problem by deleting a preference.
Go to Macintosh HD then System then Library then Preference panes then Sound.prefPane
Delete Sound.prefPane (you need to type your password).
Logout or restart.
This has happend twice this week so WHY is this suddenly occurring?
Hi,
I found this solution in the forum, but I can't find it again. I had cut and pasted it into a text file, because it solved my problem. I just don't want to take any credit for it. It did work for me. I had no problems for 3-4 weeks with the monitor, I have had the sound problem since last Friday. Very frustrating.
BSGINC

Sometimes I can't save pages as documents or I can't close the USB

Sometimes I can't save documents I am working on pages, as word documents, and sometimes I can't expulse the USB. I recently installed Mountain Lion on my MacBook Pro. I bought it in 2012.
Sometimes it says documents I am working are incompatible and can't be save, but are new documents and It won't save the changes I make to the documents.

What was your old system?
What is your new System?
What version of Pages?
How did you install it?
I don't know if you can see what's on my screen, but I definitely can't see what's on yours.
To Install Word, buy it and follow the instructions.
Peter

Usb 2.0 problem sometimes works and others not

Dear support team,
I have a problem with my envy4 uktrabook, sometimes the one usb port (2.0 at the rigth of the ultrabook) works without any problem but sometimes doesn't work without reason, and passed a time works again with out any problem.
Now the usb port is not working again.
Please your help.
Best regards

Hi amunozr,
Welcome to the HP Community, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I saw your post about the USB 2.0 port not working from time to time. What operating system do you have on your Envy? What is the product number for the Envy? What devices are you having a problem with? Are these USB 3.0 devices or ones that require power?
Thank you,
Please click “Accept as Solution ” if you feel my post solved your issue.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Thank you,
BHK6
I work on behalf of HP

USB Mouse clicks get registered twice, sometimes

Hello all
I am using Arch Linux on my Thinkpad T61, and I usually have a USB mouse hooked up to it (Logitech Nano).
A while ago I started to do some tweaks in order to enable the Synaptics TouchPad and get proper scrolling behaviour on the TrackPoint. However, I must have done something, because ever since, many of my USB mouse clicks get registered as a double click (not always, but often).
I started doing some troubleshooting today, by commenting out parts of my xorg.conf file (I use evdev hotplugging, but I tought maybe Xorg was registering my mouse aswell) and I even booted up without an xorg.conf once, to no avail. The problem definately does not lie there.
The only policy file I have that has anything to do with a mouse is /etc/hal/fdi/policy/mouse-wheel.fdi.
[rob@rob-thinkpad ~]$ cat /etc/hal/fdi/policy/mouse-wheel.fdi
<match key="info.product" string="TPPS/2 IBM TrackPoint">
<merge key="input.x11_options.EmulateWheel" type="string">true</merge>
<merge key="input.x11_options.EmulateWheelButton" type="string">2</merge>
<merge key="input.x11_options.YAxisMapping" type="string">4 5</merge>
<merge key="input.x11_options.XAxisMapping" type="string">6 7</merge>
<merge key="input.x11_options.Emulate3Buttons" type="string">true</merge>
<merge key="input.x11_options.EmulateWheelTimeout" type="string">200</merge>
</match>
Also, I found multiple entries for my mouse in /proc/bus/input/devices:
[rob@rob-thinkpad ~]$ egrep "Name|Handlers" /proc/bus/input/devices
N: Name="Macintosh mouse button emulation"
H: Handlers=mouse0 event0
N: Name="AT Translated Set 2 keyboard"
H: Handlers=kbd event1
N: Name="ThinkPad Extra Buttons"
H: Handlers=kbd event2
N: Name="Power Button (FF)"
H: Handlers=kbd event3
N: Name="Lid Switch"
H: Handlers=event4
N: Name="Sleep Button (CM)"
H: Handlers=kbd event5
N: Name="Video Bus"
H: Handlers=kbd event6
N: Name="PC Speaker"
H: Handlers=kbd event7
N: Name="SynPS/2 Synaptics TouchPad"
H: Handlers=mouse1 event8
N: Name="Logitech USB Receiver"
H: Handlers=mouse2 event9
N: Name="Logitech USB Receiver"
H: Handlers=kbd event10
N: Name="TPPS/2 IBM TrackPoint"
H: Handlers=mouse3 event11
N: Name="ThinkPad HDAPS joystick emulation"
H: Handlers=event12 js0
N: Name="ThinkPad HDAPS accelerometer data"
H: Handlers=event13 js1
Could someone please help me solve this problem, for I have no more ideas how to go at this... Thanks
Last edited by robrene (2009-06-05 09:47:18)

It seems there are multiple entries for my USB mouse in /var/log/Xorg.0.log!
(II) config/hal: Adding input device Logitech USB Receiver
(**) Logitech USB Receiver: always reports core events
(**) Logitech USB Receiver: Device: "/dev/input/event9"
(II) Logitech USB Receiver: Found 16 mouse buttons
(II) Logitech USB Receiver: Found x and y relative axes
(II) Logitech USB Receiver: Found scroll wheel(s)
(II) Logitech USB Receiver: Configuring as mouse
(**) Logitech USB Receiver: YAxisMapping: buttons 4 and 5
(**) Logitech USB Receiver: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
(II) XINPUT: Adding extended input device "Logitech USB Receiver" (type: MOUSE)
(**) Logitech USB Receiver: (accel) keeping acceleration scheme 1
(**) Logitech USB Receiver: (accel) filter chain progression: 2.00
(**) Logitech USB Receiver: (accel) filter stage 0: 20.00 ms
(**) Logitech USB Receiver: (accel) set acceleration profile 0
(II) config/hal: Adding input device Logitech USB Receiver
(**) Logitech USB Receiver: always reports core events
(**) Logitech USB Receiver: Device: "/dev/input/event10"
(II) Logitech USB Receiver: Found 1 mouse buttons
(II) Logitech USB Receiver: Found scroll wheel(s)
(II) Logitech USB Receiver: Found keys
(II) Logitech USB Receiver: Configuring as keyboard
(II) Logitech USB Receiver: Adding scrollwheel support
(**) Logitech USB Receiver: YAxisMapping: buttons 4 and 5
(**) Logitech USB Receiver: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
(II) XINPUT: Adding extended input device "Logitech USB Receiver" (type: KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "evdev"
(**) Option "xkb_layout" "de"
(**) Option "xkb_options" "terminate:ctrl_alt_bksp"
This looks pretty bad to me... The USB reciever is listed once as a mouse and once as a keyboard. Something went very awry here. This is the output after a fresh boot without xf86-input-mouse installed. The only remaining input drivers I have left from xf86 are:
[rob@rob-thinkpad ~]$ pacman -Q xf86-input-
xf86-input-evdev xf86-input-keyboard xf86-input-synaptics
edit
I removed xf86-input-keyboard as well now, still no change...
edit2
Aha! After some Googling and hooking up the mouse on a Windows XP machine, I noticed that this is a problem with this specific mouse. Under Windows XP, I get the same behaviour (often a double click, sometimes no click at all). It seems it is time to find the warranty papers for this baby. In case anyone ever reads this, this happened to me on a Logitech VX Nano, after about 5-10months of usage (I don't recall when I bought it exactly).
Last edited by robrene (2009-06-05 15:14:23)

Ext. HD sometimes USB 3, sometimes USB 2

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