PCIe Wireless N network card cannot go faster than 54Mb/s, can't see 5GhZ Network

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Nathan Fok

Honorable
Jan 11, 2014
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10,510
I've been using this ASUS PCE-N53 network card for about a year now, and it was working pretty well before the driver was mangled by a recent Windows Update.

I remember that I had to jump through a few hoops to get the card to see my 5GhZ wireless N signal the first time around, but I can't for the life of me remember what I did.

With the new driver, my wireless speed never goes about 54Mb/s, despite being on a wireless N network with a channel width of 40MhZ. I also can no longer see my 5GhZ wifi signal that I have been using. My phone can see and connect to the 5GhZ signal, so it doesn't seem to be a sudden problem with the router.

I have tried installing older/newer drivers from ASUS and Ralink (now MediaTek), but nothing has worked so far.

Any help would be much appreciated!
 
Solution
A
Check and see if your encryption is set to something like WPA(TKIP) or WPA(TKIP)+WPA2(AES). If this is the case, drop the WPA. WPA (TKIP) is limited by design to 54mbps. Use only WPA2(AES). ISPs have wireless router that use this and even though everything says it is 802.11n, in reality, it is limited to 54mbps.

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photonboy

photonboy

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Jun 20, 2006
21,567
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If you have Windows 8, make sure to update to W8.1

Proper order:

1. Remove the PCIe card
2. Remove the older drivers and reboot
3. Install the newer/same drivers
4. Add the card back.

I don't know if that matters, just that the Asus site said to install the drivers FIRST.

The Windows 7 version has a software package in addition to the drivers and the W8 version does not. They are under "wireless." Windows 7 version:
http://www.asus.com/Networking/PCEN53/#support

*What was confusing was whether the UTILITY had the driver as well, since the driver is v1.0.0.8 but then the UTILITY just starts at v1.0.0.9. I suppose you could install the v1.0.0.8 driver then reboot and install the latest Utility v1.0.1.0

If you're really stuck, try doing a RESTORE to an earlier System Restore point to when the driver worked, then manually do all Microsoft Updates and HIDE the network one for that card that Microsoft tries to add from being added (if possible). I did that a few years ago for an identical scenario.
 
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Nathan Fok

Honorable
Jan 11, 2014
2
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10,510
I'm running on Windows 7 x64, and I've tried both official packages from the ASUS site, it's a no-go. I have also tried the install instructions for Windows 8.1, just in case :p

Unfortunately, I'm less than careful when it comes to restore points, so that's not an option either. I have stuck the card into another PC in the house, but it seems like I get the same problem
 
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amskeptical

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Jun 15, 2013
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10,520
Check and see if your encryption is set to something like WPA(TKIP) or WPA(TKIP)+WPA2(AES). If this is the case, drop the WPA. WPA (TKIP) is limited by design to 54mbps. Use only WPA2(AES). ISPs have wireless router that use this and even though everything says it is 802.11n, in reality, it is limited to 54mbps.

 
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