Now you can test Ethernet patch cables for continuity and common wiring standards that include Gigabit Ethernet, Fast Ethernet, and fast Ethernet Crossover quickly with The Patch Test Ethernet Cable Tester.

“Through its LED lights the Patch Test will indicate a Gigabit Ethernet Straight Through, 10/100Mb Fast Ethernet Straight Through, 10/100Mb Fast Ethernet Crossover, and a bad or unidentified cable.”

via thinkgeek.com