Suitable for computers with POST codes output to the parallel port. The power supply is flexible and can be connected to USB or computer host power. Easy installation, just plug into the PCI interface. Displays the hexadecimal code of your booting computer. Hexadecimal character display. Detailed and precise LED function table and code indication table for convenient reference. Fully compatible with 286 to PIV high, medium, and low grade motherboards. Fault codes are accurate and reliable without system crashes. M/M USB cable length: 50cm. System compatibility: 98 SE, ME, NT, 2000, XP, VISTA or higher. Model Number: Motherboard Post Tester. Interface Type: PCI, USB. Type: Network Repair Tool Kit. Color: 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 listed items are included; other products are not included. Note: Lighting and different displays may cause slight color differences between the image and the actual item. Measurement error allowance is +/- 1-3cm.