I bought a laptop last month--this one. Along with it, I bought this wireless router, and it came with this wireless card. I'm not sure if I should replace the one included in my laptop with this one to increase my wireless speed on my laptop or not. If you need any specs I can get off my computer, let me know.

You don't need it. The laptop already has built in wireless N, so that card would not do anything. Put it in a different laptop.