Amazon.com: Yankok [Network and USB Cable Tester] for RJ45 RJ12 RJ11 Ethernet, USB (AA, AB), Coaxial BNC RCA,10BASE-T 100BASE-T, EIA/TIA 568A/568B and Token Ring Cables (Come with User Manual and Carry Pouch) :
Network LAN/PHONE/USB Cable Tester Test RJ45 RJ-11 CAT5 USB | eBay
CT-168 Multi-Modular Network RJ45 Cat5 RJ11 Ethernet Hot Cable LAN USB Tester | eBay