Buying used NICs

What do you guys think is the most accurate way to test used NICs?... I'm buying some from Ebay and I want to make sure they are fully working ones ASAP...

Ebay NICs here

Install them and use them. Its the best way to be absolutley certain they work!

Oso,

NICs are compatible with system - check
Shut Box off - check
Open case – check
Correctly install – check
Close case – check
Run Cable – check
Turn Box on – check
Green lights on NIC – check
Green light on Router - check
OS boots – check
New Hardware recognized, drivers installed – check
Bind TCP/IP to NIC – check
DHCP – check
Ping router –check
Click on browser opens to AO – check
Logon to AO

:)

Edit: Type faster than Nokia - check

:D