Noyafa PP1888 NF-388 FOME Multipurpose Network Cable Tester Tracker with 8 Far-End Jacks for Test Ethernet LAN Phone Wire USB Coaxial (Blue)+ FOME GIFT Directly hunt 5E, 6E, telephone wire, coaxial cable, usb cable and other cables Hub blink for locating network port by the flashing port light on hub/ switch Check wiring error in 5E, 6E, coaxial cable, such as open, short, cross, ect Measure cable length and determine the distance of broken point Testing polarity and voltage 8 remote identifiers help to test 8 cables at one time. Memory for calibration data storage.