Features: 100% brand new and high quality Size (approx): 6 x 5.5 x 1.5 cm M/M USB Cable Length: 51cm Interface Type: 25-pin male connector for printer No need to install ANY software. 2 keys for codes PREVIOUS / NEXT Diagnose your computer's errors without opening your laptop or desktop with a 25-pin printer port. Capture and display the hexadecimal code for your booting computer. 5 LED indicator: +12, -12 +3V3, CLK, RAM. Hexadecimal character display. Detailed and precise code indication table for easy reference. Comes with USB A-Type male cable, powered directly via USB port. Compatible with PHOENIX BIOS4.01~6.01 laptop and desktop. Compatible with AMIBIOS 6.24, AWARD BIOS 4.51 laptop and desktop. Specific computer types: IBM, T20, T21, T22, T23, A20, A21, A22, 640, TOSHIBA 4030, etc. Compatible with the following BIOS chip manufacturers: ACER - AMI - AST - AT&T - Award - Chips & Tech - Compaq - DTK - EuroSoft - Mylex - Faraday - HP - IBM - Landmark - Mr. BIOS - NCR - Olivetti - Phillips - Phoenix - Quadtel Package includes: 1 x USB PCI PC & LAPTOP Diagnostic Analyzer 4-digit card motherboard post tester (no retail packaging, packed safely in bubble wrap)