Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Got a Trendnet tew-624UB 300Mbps newer revision wifi usb dongle. Works just fine!

On checking connection information on n etwork manager it shows up as a 150Mbps device using rtl8192cu as a driver. This device is a 300Mbps wifi dongle.

The maximum TX strength is 80% and signal strength 100%...which is just fine! But i have no range?!! Checked with the router touching it and its still 80 % On checking this device with win7 everything is 100% running @ catches 2 floors strong signal but not with ubuntu 12.04! Simply put the "rtl8192cu " is a 150Mbps driver and not 300Mbps.

Is there a 300Mbps driver or an upgrade path for this device that i can use far away from my 300 Mbps router..... it works fine @ 150Mbps but with no range.


share|improve this question
up vote 1 down vote accepted

Solved. My blog with other OS too...

Trendnet TEW624UB and Tp-link wn821n have the same chipset. There are many devices which have the same pathetic rtl8192cu wifi chipset.

Apparently, the driver from realtek website is unmaintained and shows up as a 150Mbps driver but is very buggy(already included in kernel). Thanks to Janez troha for maintaining the driver and making it installable for kernel 3.8, 3.10 and as he/she puts it 3.11++.

The rtl8192cu works 24/7 without glitches with the change Janez has made to the source.

You can check with iwconfig or network-manager applet to see the speed of data transfer, it will clearly show it is 300Mbps and NOT 150Mbps.

I hope realtek provides better support for linux.

Further linked to : Installing Workaround RealTek Drivers for EdiMAX, but getting error && Installing Workaround RealTek Drivers for EdiMAX, but getting error

share|improve this answer

I use TEW-625BRP, also rated at 300 mbps. I too thought that the rtl8192cu was only 150 mbps, but I downloaded the driver and softare from Realtek website. now BOTH realtek software and Windows networking shows 300 mbps

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.