MBP won't recognize 802.11n 5ghz band

My sisters MBP can recognize the 5ghz wireless N network but mine wont. My MBP can only detect the 2.4Ghz G network. I am using a Linksys E4200 router. I have it set to where the 2.4Ghz band is using G only and The 5Ghz band is using N only.

Make sure the router is using a 5 GHz channel that the MBP supports.
You can get the list in System Information under WiFi.

Similar Messages

802.11n 5ghz Connection Problem with OS X 10.4.11 Tiger

I've searched the communities for answer to this vexing issue to no avail, so I am trying a post.
Situation:
I have a dual-band 1TB TC at home set up with three networks: 802.11g/b/a, 802.11n ((5ghz), and Guest Network (g/b). There are four Macs accessing it: (2) mid-2009 15" MacBook Pros, 2009 MacBook Air, mid-2006 24" iMac. All are running Snow Leopard 10.6.7 except the 24" iMac (Core 2 Duo) running 10.4.11.
All Macs can connect to to all networks EXCEPT the iMac which has a problem with the 802.11n (5ghz) connection ONLY. The iMac has the n-enabler installed (can see it registered when looking at Network Utility). In fact, the iMac will connect but any attempt to access to the Internet or TC disk stalls the system. Switch back to 802.11g and everything is fine.
I've looked at the Console for guidance but cannot find anything problematic (to my eyes, anyway). I booted this iMac to Snow Leopard from an external disk and the problem cannot be duplicated, so I am assuming this is not a hardware issue with the iMac. I also, did a fresh install of Tiger and updated it to 10.4.11 plus all Airport updates and n-ebabler on an external drive, booted from this drive and have the same issue with the 5 ghz n-connection.
By the way, when connected to 802.11n (5ghz) network with the iMac, I have full bars on the menubar fan, but then one bar drops after a minute or so. When this happens, I cannot access the Internet nor the TC disk.
I've tried various tweaks as described in the many, many discussion threads here: resets, establish new locations, clear/repair the keychain, and many others.
I did not have this problem in the past with this iMac, so don't know what has changed with the system configuration. The g-connection is rock-solid, so Internet access is fine, but file transfer speeds ober the network are obviously much slower now than with the 5ghz n-connection.
Anyone have any ideas? Without suggesting an upgrade to 10.6...clearly that should do the trick. I have other reasons for running Tiger on the iMac.
Thanks.

I wonder if all the activity was too much for the hard drive and it failed....you might contact Apple about this repair extension program to see if you qualify...
http://www.apple.com/support/macbook/hd/repairextension/

AEBS 802.11n 5GHz gives "invalid password" - need a solution!

After an update to 7.2.1 I've been trying for the past 4 hours to get back on my 5GHz network, but no success. I hope someone can resolve this, because it's getting extremely annoying.
- 802.11n (b/g compatible) 2.4GHz, pass or no pass -> works
- 802.11n only 2.4GHz, pass or no pass -> works
- 802.11n 5GHz, no password -> works
- 802.11n 5GHz, WPA2 Personal pass -> invalid password
I tried everyting. First setting it to b/g compatible at 2.4GHz (when it works in Leopard), then to 5GHz -> invalid password. Added it to my preferred networks, hard reset of the AEBS, downgrade to 7.1.1 and a hard reset, new names for the networks, different passwords, deleted everything from the keychain to avoid any mixups, countless reboots...
No results. I just cannot connect to a 5GHz network, because Leopard claims the password is invalid.
I have no clue what to do next. It worked fine until I upgraded to 7.2.1, and now even when I downgraded to 7.1.1, it still won't work. And 5GHz works fine without a password. But as soon as you set a WPA2 Personal (this or WPA2 Enterprise, which I don't want), Leopard says invalid password.
I also noticed that when I setup a preferred network in Leopard, and insert a WPA2 Personal password, it changes it to simple WPA, without the 2, when I save it. Although this is strange, it shouldn't matter. Because when I setup a 802.11n 2.4GHz instead of 5GHz network with a WPA2 Personal password, it works great with my WPA(no 2)-preferred-network settings.
I'm completely lost here. Who can help me out?
(Just a tip: do not, I repeat, do not ! update to 7.2.1).

Hi guys. "Good" to know we're not the only ones. I reported it also, let's hope an update follows soon.
I still don't know where the problem lies exactly. Mainly because it did work for me in Leopard, after I did a completely clean install last friday. It just picked up the network and it worked. I tried 7.0, 7.1, 7.1.1 and 7.2.1 about 5 times each now. All along with complete hard resets, powerdowns and all the possible settings I could think of, nothing works. First I'd say it's probably the AE firmware, but since nothing works anymore, I'm leaning towards Leopard now...
Maybe the password isn't being sent correctly to the AE, or the respons of the AE doesn't get received properly. There already was a Keychain update right after the release, maybe there are still more updates in that area, and they'll be included with the next big update.
If anyone finds a way to fix it, let us know! I'll keep trying, although I don't think it'll do much good

802.11n (5Ghz) / UK / Performance

Hi,
I have an Airport Extreme upstairs and 2 x Airport Expresses downstairs (one is extending the network, the other is an ethernet bridge).
When I try and setup the extreme as 802.11n (5GHz only) I get dreadful coverage to downstairs (my MacBook and Expresses can't see it at all). I can connect in the same room via my MacBook but that's about it. With b/g compatibility all is fine again but I really want to boost my internet speed to the lounge where the expresses reside (by boosting the household wireless overall).
I saw old posts about changing country so you can use wide channels etc ... and I've tried some other country settings but the same problem with coverage. Is this a UK restriction - the lack of wide channels means a lack of coverage / performance under 802.11n only?
Thanks in advance for any advice ...

Higher frequency 5 GHz signals are absorbed by any obstructions, walls, etc much more quickly than 2.4 GHz signals. You really almost need line-of-sight between the computer and AirPort Extreme because the 5 GHz signals have much less penetration and distance power.

802.11n (5Ghz only) network and Remote App.

I have a Time Capsule set up 802.11n (5Ghz only). iMac, MacBook & New Airport Express all connected to its network. Transmit rate is 270.
My question is, if my iPod Touch is g rated only, then how can the Remote App control my Airtunes if it cannot connect to my N network. Because it is.

My Time Capsule
Wireless Mode=Create a wireless network
Radio Mode=802.11n only (5GHz)
My Time Capsule is connected to my Netgear (g only) router via ethernet.
I have the router broadcasting a g network for my iPod Touch. The Macs & AAE or all connected wirelessly to my Time Capsule N-only Network.
So the Touch should not be able to connect to my Airport Express as I understand it.

AirPort Extreme (802.11n) dual band is reporting problems?

Hi.
I can not find an answer for my error-problem:
AirPort Extreme (802.11n) dual band is reporting problems!
I have an optimum on line cable modem connected to my AirPort Extreme (802.11n) dual band.
Ethernet cables connect it 1. into my new Nehalem Mac Pro, 2. into my back-up Quicksilver PowerMac. I also have 2nd gen. iPod touch works on WiFi.
This set-up has been working well but now I daily get the above error. Sometimes it says also: You have different locations set-up and it asks me to go through the set-up procedure. May be I did the initial set-up incorrect. I don't quite understand "locations" and it's purpose.
Also the Airport runs very hot so I put a small fan in front of it. A few times I had to disconnect the cable mains to reset and get back my service. Please help.
W.W.

Walter Wedler wrote:
AirPort Extreme (802.11n) dual band is reporting problems!
I have an optimum on line cable modem connected to my AirPort Extreme (802.11n) dual band.
Ethernet cables connect it 1. into my new Nehalem Mac Pro, 2. into my back-up Quicksilver PowerMac. I also have 2nd gen. iPod touch works on WiFi.
This set-up has been working well but now I daily get the above error. Sometimes it says also: You have different locations set-up and it asks me to go through the set-up procedure. May be I did the initial set-up incorrect. I don't quite understand "locations" and it's purpose.
Can you tell what's telling you about those locations? An Apple AirPort unit can maintain different "configurations" so that it could be used in different locations without a complete reconfiguration. However, I don't believe they're ever referred to as "locations". On the other hand, a Mac can have multiple "locations" defined in the Network panel of System Preferences. Those can be useful if the Mac is used in different places with different arrangements.
If your AirPort Extreme is having problems the status light on the front will probably be amber. If you launch AirPort Utility and double-click on the AirPort Extreme item on the left, you should be able to see more details about the problem.

802.11n 5GHz no longer works on one Macbook

Good evening,
Our household has two Macs connected to an Airport Extreme 802.11n (July 2007), both are MacBooks (Late 2006). For well over a year, both have happily connected to the AE using 802.11n 5GHz. A few weeks ago, however, my wife's Macbook stopped connecting. I've tried a number of things (reconfiguring, restarts, reinstalling the last combo updates, etc.) and the only thing that appears to work is dropping the AE to 2.4GHz (I still keep it at 802.11n-only). My Macbook continues to be able to connect just fine at 5GHz, when I enable that on the AE.
Considering that this drops our available bandwidth from 300Mbps to 130Mbps, I'm not a happy camper, but I'm also tapped out of ideas. I can only guess that there's a hardware malfunction on my wife's Macbook. Her Applecare doesn't expire until 2010, so I may just take it in ...
Any ideas? One note: my wife is still clinging to Tiger, while I'm on Leopard ... in case that matters.
Thanks,
Brice

Not that I can tell. Suspiciously, we did run a salvo of updates from Software Update and the problems started immediately after, but none of those appeared to be directly related to Airport functionality (firmware or otherwise). Just to be sure, I took the "safe" steps of repairing permissions, re-downloading the last combo update & re-applying it. I also searched for any firmware updates related to Airport. What's odd to me is that the firmware reported on her machine is different than that on mine. They're both Late 2006 Macbook models, so that strikes me as odd (but maybe it isn't). I wasn't able to find any updates that her Macbook was lacking, however.
My (working) firmware is: [type] AirPort Extreme (0x168C, 0x87), [version] 1.4.8.0
Her (not-working) firmware is: [type] AirPort Extreme (0x168C, 0x87), [version] 1.4.4
Based on the card type, it doesn't appear that they're different chipsets, so I'm not at all clear on why the firmware versions differ. Was there a firmware update for Leopard that wasn't available/needed for Tiger?
Also, I know for sure that there were no firmware updates performed during the last set of updates ... that's a more involved process, if I recall, not handled through the standard updater, I think.
Thanks for the response!

Cisco Aironet AIR-SAP2602I-E-K9 WAP -ERROR: VLAN 1000 doesn't exist on 'Radio1-802.11N 5GHZ' (see Services VLAN)

Hey guys,
I'm configuring my access points with two SSID's through the GUI. The first is a corporate SSID and the second a guest SSID. The corporate SSID needs to be attached to native VLAN 1000. The guest SSID needs to be attached to VLAN 1234. Both SSID's / VLAN's are to use WPAv2 AES CCMP with a PSK. Although I'm getting an error message indicating that my VLAN's don't exist on ‘Radio1-802.11N 5GHZ’ . Here are steps I take from start to error...
Create SSID’s with no security. CORP not to broadcast. Set CORP to use native VLAN 1000. Set guest to use VLAN1234.
Within security encryption manager > Set encryption mode cipher to AES CCMP on both VLAN 1000 and VLAN1234.
Within services > VLAN check that both VLAN’s have Radio0-802.11N 2.4GHZ and Radio1-802.11N 5GHZ selected. They do.
Within Security > SSID Manager – set client authenticated key management to mandatory, enable WPA – WPAv2. Set pre-shared key. Hit apply > “ERROR: VLAN 1000 doesn’t exist on ‘Radio1-802.11N 5GHZ’ (see Services > VLAN).
I get the same error for both SSID’s. Radio1-802.11N 5GHZ is "checked" against both VLAN's. Am I missing something? Both Radio0-802.11N 2.4GHZ and Radio1-802.11N 5GHZ are enable interfaces and are "up".
I'm pretty customed to switch and router IOS although have absolutely no exposure to WAP CLI.
Any assistance appreciated.

I've resolved this myself. The GUI is basically terrible and very buggy. I used the CLI and was able to add WPA through the CLI.

MBP won't recognize tethered Verizon LG handset

I am traveling through the US for a few months and have an LG handset that can be tethered as a modem to a computer.
When I was given the handset a few months ago, I plugged it into my MBP (running Leopard .8) and the network preferences immediately recognized that the handset was connected although I couldn't do anything with it at the time.
I activated the handset today at a Verizon store and have now spent over two hours trying to make it work. My MBP won't recognize the handset. I downloaded the VZ Access Manager software and tried an auto detect but it's also not seeing my handset. It doesn't show up under the System Profiler either.
What am I missing?
Thank you,
Rae

Never mind; it turns out you need to restart your handset a couple of times. It's still not working, but at least the computer recognizes the handset is there, so that's progress.
Rae

Airport Extreme 802.11n dual band SNMP missing physical interfaces

Hi, I'm trying to monitor my new AEBS with snmpwalk on an old MacMini running Debian. I downloaded the mib from Apple and placed it in /usr/share/snmp/mibs. Then I run snmpwalk to see what I could get (I obviously removed the MAC addresses):
brian@minimac:~$ snmpwalk -v 2c -c public -m+AIRPORT-BASESTATION-3-MIB 192.168.1.1 1.3.6.1.4.1.63.501
AIRPORT-BASESTATION-3-MIB::sysConfName.0 = STRING: club3313
AIRPORT-BASESTATION-3-MIB::sysConfContact.0 = STRING: Brian Mauter
AIRPORT-BASESTATION-3-MIB::sysConfLocation.0 = STRING:
AIRPORT-BASESTATION-3-MIB::sysConfUptime.0 = INTEGER: 1803154
AIRPORT-BASESTATION-3-MIB::sysConfFirmwareVersion.0 = STRING: 7.5.1
AIRPORT-BASESTATION-3-MIB::wirelessNumber.0 = INTEGER: 3
AIRPORT-BASESTATION-3-MIB::wirelessPhysAddress."(mac addr #1 hidden)" = STRING: "(mac addr #1 hidden)"
AIRPORT-BASESTATION-3-MIB::wirelessPhysAddress."(mac addr #2 hidden)" = STRING: "(mac addr #2 hidden)"
AIRPORT-BASESTATION-3-MIB::wirelessPhysAddress."(mac addr #3 hidden)" = STRING: "(mac addr #3 hidden)"
AIRPORT-BASESTATION-3-MIB::wirelessType."(mac addr #1 hidden)" = INTEGER: sta(1)
AIRPORT-BASESTATION-3-MIB::wirelessType."(mac addr #2 hidden)" = INTEGER: sta(1)
AIRPORT-BASESTATION-3-MIB::wirelessType."(mac addr #3 hidden)" = INTEGER: sta(1)
AIRPORT-BASESTATION-3-MIB::wirelessDataRates."(mac addr #1 hidden)" = STRING: 1(b) 2(b) 5(b) 6 9 11(b) 12 18 24 36 48 54
AIRPORT-BASESTATION-3-MIB::wirelessDataRates."(mac addr #2 hidden)" = STRING: 1(b) 2(b) 5(b) 6 9 11(b) 12 18 24 36 48 54 MCS: 0-15,43
AIRPORT-BASESTATION-3-MIB::wirelessDataRates."(mac addr #3 hidden)" = STRING: 1(b) 2(b) 5(b) 6 9 11(b) 12 18 24 36 48 54 MCS: 0-15,72
AIRPORT-BASESTATION-3-MIB::wirelessTimeAssociated."(mac addr #1 hidden)" = INTEGER: 1802714
AIRPORT-BASESTATION-3-MIB::wirelessTimeAssociated."(mac addr #2 hidden)" = INTEGER: 1802606
AIRPORT-BASESTATION-3-MIB::wirelessTimeAssociated."(mac addr #3 hidden)" = INTEGER: 1759013
AIRPORT-BASESTATION-3-MIB::wirelessLastRefreshTime."(mac addr #1 hidden)" = INTEGER: 0
AIRPORT-BASESTATION-3-MIB::wirelessLastRefreshTime."(mac addr #2 hidden)" = INTEGER: 0
AIRPORT-BASESTATION-3-MIB::wirelessLastRefreshTime."(mac addr #3 hidden)" = INTEGER: 0
AIRPORT-BASESTATION-3-MIB::wirelessStrength."(mac addr #1 hidden)" = INTEGER: -83
AIRPORT-BASESTATION-3-MIB::wirelessStrength."(mac addr #2 hidden)" = INTEGER: -70
AIRPORT-BASESTATION-3-MIB::wirelessStrength."(mac addr #3 hidden)" = INTEGER: -76
AIRPORT-BASESTATION-3-MIB::wirelessNoise."(mac addr #1 hidden)" = INTEGER: -76
AIRPORT-BASESTATION-3-MIB::wirelessNoise."(mac addr #2 hidden)" = INTEGER: -96
AIRPORT-BASESTATION-3-MIB::wirelessNoise."(mac addr #3 hidden)" = INTEGER: -103
AIRPORT-BASESTATION-3-MIB::wirelessRate."(mac addr #1 hidden)" = INTEGER: 11
AIRPORT-BASESTATION-3-MIB::wirelessRate."(mac addr #2 hidden)" = INTEGER: 39
AIRPORT-BASESTATION-3-MIB::wirelessRate."(mac addr #3 hidden)" = INTEGER: 72
AIRPORT-BASESTATION-3-MIB::wirelessNumRX."(mac addr #1 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::wirelessNumRX."(mac addr #2 hidden)" = INTEGER: 1035089
AIRPORT-BASESTATION-3-MIB::wirelessNumRX."(mac addr #3 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::wirelessNumTX."(mac addr #1 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::wirelessNumTX."(mac addr #2 hidden)" = INTEGER: 891819
AIRPORT-BASESTATION-3-MIB::wirelessNumTX."(mac addr #3 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::wirelessNumRXErrors."(mac addr #1 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::wirelessNumRXErrors."(mac addr #2 hidden)" = INTEGER: 102
AIRPORT-BASESTATION-3-MIB::wirelessNumRXErrors."(mac addr #3 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::wirelessNumTXErrors."(mac addr #1 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::wirelessNumTXErrors."(mac addr #2 hidden)" = INTEGER: 97
AIRPORT-BASESTATION-3-MIB::wirelessNumTXErrors."(mac addr #3 hidden)" = INTEGER: -1
AIRPORT-BASESTATION-3-MIB::dhcpNumber.0 = INTEGER: 4
AIRPORT-BASESTATION-3-MIB::dhcpPhysAddress."(mac addr #1 hidden)" = STRING: "(mac addr #1 hidden)"
AIRPORT-BASESTATION-3-MIB::dhcpPhysAddress."(mac addr #4 hidden)" = STRING: "(mac addr #4 hidden)"
AIRPORT-BASESTATION-3-MIB::dhcpPhysAddress."(mac addr #2 hidden)" = STRING: "(mac addr #2 hidden)"
AIRPORT-BASESTATION-3-MIB::dhcpPhysAddress."(mac addr #3 hidden)" = STRING: "(mac addr #3 hidden)"
AIRPORT-BASESTATION-3-MIB::dhcpIpAddress."(mac addr #1 hidden)" = IpAddress: 192.168.1.136
AIRPORT-BASESTATION-3-MIB::dhcpIpAddress."(mac addr #4 hidden)" = IpAddress: 192.168.1.100
AIRPORT-BASESTATION-3-MIB::dhcpIpAddress."(mac addr #2 hidden)" = IpAddress: 192.168.1.101
AIRPORT-BASESTATION-3-MIB::dhcpIpAddress."(mac addr #3 hidden)" = IpAddress: 192.168.1.146
AIRPORT-BASESTATION-3-MIB::dhcpClientID."(mac addr #1 hidden)" = ""
AIRPORT-BASESTATION-3-MIB::dhcpClientID."(mac addr #4 hidden)" = ""
AIRPORT-BASESTATION-3-MIB::dhcpClientID."(mac addr #2 hidden)" = ""
AIRPORT-BASESTATION-3-MIB::dhcpClientID."(mac addr #3 hidden)" = ""
AIRPORT-BASESTATION-3-MIB::dhcpLeaseTime."(mac addr #1 hidden)" = INTEGER: 77377
AIRPORT-BASESTATION-3-MIB::dhcpLeaseTime."(mac addr #4 hidden)" = INTEGER: 50308
AIRPORT-BASESTATION-3-MIB::dhcpLeaseTime."(mac addr #2 hidden)" = INTEGER: 85852
AIRPORT-BASESTATION-3-MIB::dhcpLeaseTime."(mac addr #3 hidden)" = INTEGER: 86278
Where is the physicalInterfaces stuff? I have two things plugged in on the LAN ports, a NetGear GS108 switch and the mac mini (statically assigned IP) so I think I should see them via SNMP much like it's mentioned here:
http://people.no-distance.net/ol/olog/2005/03/airport-extreme-express-and-snmp.h tml
What am I doing wrong?
Thanks,
-Brian

Walter Wedler wrote:
AirPort Extreme (802.11n) dual band is reporting problems!
I have an optimum on line cable modem connected to my AirPort Extreme (802.11n) dual band.
Ethernet cables connect it 1. into my new Nehalem Mac Pro, 2. into my back-up Quicksilver PowerMac. I also have 2nd gen. iPod touch works on WiFi.
This set-up has been working well but now I daily get the above error. Sometimes it says also: You have different locations set-up and it asks me to go through the set-up procedure. May be I did the initial set-up incorrect. I don't quite understand "locations" and it's purpose.
Can you tell what's telling you about those locations? An Apple AirPort unit can maintain different "configurations" so that it could be used in different locations without a complete reconfiguration. However, I don't believe they're ever referred to as "locations". On the other hand, a Mac can have multiple "locations" defined in the Network panel of System Preferences. Those can be useful if the Mac is used in different places with different arrangements.
If your AirPort Extreme is having problems the status light on the front will probably be amber. If you launch AirPort Utility and double-click on the AirPort Extreme item on the left, you should be able to see more details about the problem.

Need Recommendation for Windows USB 802.11N Dual Band Card for AEBS

I am building a very large WiFi network to support 100 users. The plan is to use only Dual Band Airport Extreme Base Stations.
Can anyone recommend a compatible USB adapter that will work on Windows (XP, Vista, & Windows 7)?
Looking for something that has 802.11n + 2.4GHz and 5GHz bands.
Any help is appreciated. (Google has been help to tell me what WON'T work... leaving me concerned that my network is going to have issues when it comes to PC users).

The one PC that is running Windows 7 which is the only PC running Windows 7, the rest are XP or Vista has a Atheros AR5007 wireless card keeps dropping connection to the airport. The computer is a HP Pavilion 1448dx. Does anyone have any suggestions for me to fix the signal drop to that computer, all of the other computers are fine.
Yes, please check with either HP or Atheros to see if there is an updated driver for the wireless card.
Another quick question: I was wondering if I could hook up my previous router (Belkin Wireless G Plus MIMO Router) to my Airport Extreme and have the PC's run off the belkin and my mac just run off the Airport Extreme and solve the issue with the one PC dropping connection.
Yes, it may be possible. The Belkin would have to be connected to the new 802.11n AirPort Extreme Base Station (AEBSn) via an Ethernet patch cable and reconfigured as a bridge. In addition, the Belkin's wireless radio channel should be changed to one at least 3-5 channels away from the AEBSn's channel.

Airport Express - forcing 802.11n 5Ghz setup

I've just bought a Linksys WRT160NL 802.11n wireless router and and attempting to force the Airport Express to use 802.11n rather than g. When I configure the AE, I join the existing network. There seems to be no way that I can configure it to use n/5Ghz.
Any suggestions?

Welcome to the discussions!
From your post, it sounds like you might have an older "g" AirPort Express. Might that be the case? If so, it would not be able to join an "n" wireless network.
To confirm, open AirPort Utility and click on Manual Setup for the Express. Then click on the Wireless tab to display the settings page. Hold down the option key while you click on the Radio Mode selection box. If you do not see any "n" options, you have a "g" Airport Express.
Are you trying to "extend" the wireless network created by the Linksys? I'm afraid this won't work even if you do have an "n" Express because it will only "extend" a wireless network created by other compatible Apple base stations.

How do I tell if my MacBook Pro supports 802.11n 5GHz?

As I wait for my Apple Extreme Base Station, I was wondering if it would make sense to create two different SSID networks. One Mixed b/g for 2.4GHz devices and another one solely for 5GHz. I know my ATV2 supports 802.11n in 5GHz. As I go down my list of devices in my house, I can't tell if my MacBook Pros support the 5GHz. Both MacBook Pros are Mid 2010 models.
The reason for creating two different networks is that the AEBS downgrades your network based on the lowest device (i.e. b/g would be forced on a n device if such device connects to your network).

LOLuMad wrote:
I know my ATV2 supports 802.11n in 5GHz. […] I can't tell if my MacBook Pros support the 5GHz. Both MacBook Pros are Mid 2010 models.
Of course, you are aware that n operates in both 2.4 and 5GHz.
Check AirPort in System Profiler. It should list supported modes and supported channels. Then compare supported channels to the list of WLAN channels in the 5GHz band.
<http://en.wikipedia.org/wiki/List_of_WLAN_channels>

New Mac Mini and 802.11n 5Ghz - Does it work?

Does anyone know if this works? It states that it is 802.11a compatible which uses 5Ghz so I am guessing it does. I don't want to have to use a third party internal card like I do now with a separate external antenna. Thanks.

I have a mac mini I purchased last week (late 2009). I run 5Ghz 802.11n only (there is a g access point in the house, but that's on another part of the LAN). I have an iMac and MacBookPro that connect to the 802.11n and the performance is great - almost half as fast as a direct USB connection - it simply flies.
However, the mac mini is abysmal. It connects fine - everything works, but I get hardly 1Mbyte per second., despite having full signal strength. This is the info in System Profiler:
en1:
Card Type: AirPort Extreme (0x14E4, 0x90)
Firmware Version: Broadcom BCM43xx 1.0 (5.10.91.19)
Locale: ETSI
Country Code: IE
Supported PHY Modes: 802.11 a/b/g/n
Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
Wake On Wireless: Supported
Status: Connected
Current Network Information:
MyHomeNetwork:
PHY Mode: 802.11n
BSSID: 0:23:6c:be:92:08
Channel: 44,1
Network Type: Infrastructure
Security: WPA2 Personal
Signal / Noise: -52 dBm / -94 dBm
Transmit Rate: 270
MCS Index: 15
If I can't fix this soon, I'm going to have to run a cable to it, which wasn't the idea in my living room!

My MBP won't recognize my external hard drive

I have an external hard drive that used to work just fine on my MBP, but now it won't recognize it. When I plug it in (USB), the green light turns on the hard drive, but nothing happens on my MBP. Maybe it is recognizing but not letting me know? I did check disk utility but it's not there either.

Drives "unmounted" sometimes suffer volume structure damage or similar. Sometimes it's correctable without re-formatting the drive, but not always. Depending on whether or not it contains stuff you want to keep, I'd think you have two choices:
1. If you don't mind losing what's on it: Reformat the drive (which will erase the contents), using Disk Utility, or just accept the "initialize" option you are offered.
2. If you want to try to retain the drive's contents, you'll have to try to repair the disk by whatever means available to you. Disk Utility (which is part of the OS, so you own it already), DiskWarrior, and TechTool Pro may be able to detect the drive. If so, try to Repair Disk, Repair Volume Structure, etc. If the disk can't be recognized, you'll probably have to resort to the previous method.
But if this doesn't work, wait for more advice before doing anything rash, as others may think of things I didn't.

MBP won't recognize 802.11n 5ghz band

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