Suitable for computers with POST codes output to the parallel port (). The supply is flexible and can be connected to USB or computer . It is easy installation, just plug into the PCI interface. Intercept and hex the code of your booting computer. Hexadecimal character display. Detailed & precise LED function table and code Indication table, convenient for you consulting. It can be fully with 286 to PIV high, medium and low grade motherboards, the fault code is more and reliable, and it will not crash M/M USB cable Length: 50cm (Approx.) System: Windows 98 SE/ ME/ NT/ 2000/ XP / VISTA or higher Number: Motherboard Post Tester Interface Type: PCI, USB Type: Network Repair Tool Kit colour:Black+green Material:PCB+metal size:5.7 x 5.6cm Package Contents: 1 x PC PCI Diagnostic Card 1 x USB Cable 1 x English Manual Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.