The remote cable tester, is a palm-sized unit, can be used to verify the condition of cables, both before and after their installation. A passive module can be detached for testing the remote end of installed network cabling. One button testing offers easy operation and multiple LEDs give clear testing results. The unit will also automatically shut off when not in use. Ports:1 x 6-pin RJ-11 Modem Ports:1 x 8-pin RJ-45 10/100Base-TX Network Ports:1 x Type A USB Ports:1 x Type B USB Ports:1 x BNC Network Batteries: Alkaline Battery Dimensions: 1.7" x 3.3" x 1" Length Measurement:600 ft Coaxial Length Measurement:300 ft Twisted Pair