I don't know anything about wireless cards btw, I am just reading numbers here.
I am looking at Alfas website.
AWUS036H (Upgrade to 1Watt) 802.11b: UP to 11Mbps 802.11g: 54Mbps.
AWUS036NH, 2watt 802.11b: UP to 11Mbps 802.11g: UP to54Mbps 802.11n: UP to 150Mbps
AWUS051NH 802.11b: Up to 11 Mbps 802.11g: 54Mbps 802.11n: 300Mbps
I don't really know what to look for in a wireless device for penetration testing (guess thats the word for it), need it to have long range, good signal, and for my own network fast network speed for file transfer.
I also see options to get a +9dBi antenna, from what I read is that it increases range at a cost of noise?
Not exactly sure which one to buy.