DB25 Jumper Box 
Item # :TST-2100
Use this premium cable tester to troubleshoot and diagnose your cables and computer ports. This assembled RS232 Jumper box has DB25 ends....Read More

Parallel Loopback Tester 
Item # :TST-3000
Easily troubleshoot and diagnose all your parallel port problems with our parallel loopback tester. This tester features a male DB25 connector, a qual...Read More

Premium Parallel Loopback Tester 
Item # :TST-3020
Troubleshoot your parallel port problems with this quality parallel loopback tester. This tester features both male and female connections and diagnos...Read More

Serial Loopback Tester 
Item # :TST-3100
Diagnose and troubleshoot serial port problems with this quality loop back tester. This tester features both a DB9 female and DB25 female connection...Read More

Deluxe PC Cable Tester 
Item # :TST-6500
This Deluxe PC cable tester provides the user with a wire map of most standard PC data cables including Firewire and USB. A LED display shows wiring s...Read More

Deluxe ATX V2 24 Pin Power Supply Tester with LCD Screen 
Item # :TST-PWR-ATX2D
This advanced handheld power supply tester with LCD display allows you to quickly and easily test all of your power supplies. With a LCD display, this...Read More