Network Adapter

I am so lost and looking at specs everything looks the same, so at this point I just need some recommendations for a Network Adapter. I would prefer a USB one, but if a PCI express has better performance than that would be fine. My budget is no more than $35 please, will go up to $40 if needed.

This is a reasonable solution so long as the PC doesn't need to be mobile... they give fairly good speeds when within 4 bars of the original source... beats the hell out of a USB adaptor anyways... just wire it from the wifi extender (and it'll extend the wifi source for other devices)

Otherwise, I'd go with something like this which will support dual band configuration... of course you'd need a dual band router to use it to it's purpose... this would be better for pure wireless... but the wifi extender serves two purposes and does the job through physical connection