For those of you looking for a quick and easy way to get you RaLink RT3090 Wireless 802.11n 1T/1R PCIe working properly in Fedora 14, here it is.
My RaLink RT3090 Wireless 802.11n 1T/1R PCIe is in my MSI Wind U135, and the good news is that it is supported in the latest kernel (2.6.35 currently), but the staging drivers from the kernel are not included in the standard Fedora 14 install. I’m not sure what the reasons for not including them are (possibly stability, or copyright reasons), but they do have them at http://rpmfusion.org/ .
So first off, you will need some sort of connection to the internet. This could be over a wired connection or, my favourite, hooking your phone up to your computer with a usb cable, and sharing your 3g or wifi connection with the computer. My HTC Desire happily connects in Fedora 14, and if usb tethering is enabled in the options on the phone works perfectly.
Then you need to go to http://rpmfusion.org/ and enable the RPM Fusion repositories on your sytem. The package we want to install is part of the free repository, so only that one needs to be enabled.
Once you have done that, installing the required kernel modules is as simple as opening a terminal, su-ing to root, and typing:
yum install kmod-staging
Yum will then run through, download the package, and install it. Once yum is finished, a quick reboot is in order and your wireless should be working! Enjoy!
(should you come across any problems, the first thing you should check is that wifi is switched on, either by switch or key combination [Fn]+[F11] on the MSI Wind U135)

Thank you very much for your post,
I browsed the web back and forth and it seemed so complicated to make this card work! With your suggestion I managed to make it work in few seconds without any module blacklisting or things like that.
I have a problem though, I noticed that the system hangs on reboot when the wireless is on. Just on reboot, not on shutdown. Did it happen the same to you?
Thanks again,
n.
I’ll have to look into this, I have been experiencing some hanging on reboots and on suspends. When I find something I’ll reply, so watch this space.
Another thank you for the post, helped me a great deal.
I’m also having problems with hanging on reboots. In fact, it seems to hang every time i try to disconnect the WiFi. Anyone had any breakthroughs with the problem yet? I really need to be able to reboot!
Thank you for your posting. My MSI Wind U210′s wifi detected well!
doesn’t change a think here actually…
My MSI u230 wifi work well. Thanks for sharing
nice post, it works also with Fedora 15
!! It improves the performance!!