I have 2 identical wifi adapters. Can I use one for upload and

Yes.

Yes it's retarded because you usually can't have more than one wifi connection at a time.

>>52332878
But why? I read a few places that you can totally have multiple wifi connections, but they'll act independently. Couldn't I make my computer see one as strictly up and the other as strictly down? Or at least limit the up/down on each one?

It is possible... i run my Rasperry PI as a VPN Hotspot solution for my journeys. It uses the "one" Wifi card to connect to a Hotspot and the other to create a hotspot for my devices.

Check this out >>http://makezine.com/projects/browse-anonymously-with-a-diy-raspberry-pi-vpntor-router/

>>52332780
I don't know much about networks, but that seems a bit odd - I mean, it'd mean you'd have one IP address for up, and one for down; at the very least, you'd need your router to know that any traffic for the first address should be sent to the second instead. I can't see any technical reason why you couldn't do it (which isn't to say no reason exists), but you might have to be willing to write a good deal of your network stack; one would imagine this means a custom kernel.

>>52332950

The thing is, in order to have a solid connection your adapter still need to send and receive data. The OS would just get confused as to which connection to keep anyways. You'll most likely end up with a very unstable set up.

File: tumblr_mbmdmpMbJn1r5325so1_400.gif (315KB, 375x268px) Image search: [Google]

315KB, 375x268px

>>52332950
what if you plugged 4 USB WiFi cards into the ports and then manually selected which three you would put into your anus?

No, that's not how RF works.
You'd need to have two AP-side interfaces as well, and have them on different frequencies if you wanted any meaningful performance gain.

>>52332780
Yeah its possible but you get usually no advantage... Depends on what you want to do

>>52332780
It's possible to use 2 at the same time -- not exclusive to download/upload though, but you don't benefit from it, so it's kinda stupid.

>>52332780
You can if you feel like reprogramming your IP stack.