Features: Hexadecimal character display. Detailed & precise Code Indication Table, convenient for you consulting. Come with USB A-Type male cable, directly powered via USB port. Compliant to the PHOENIX BIOS4.01~6.01 laptop and desktop. Compliant to the AMIBIOS 6.24, AWARD BIOS 4.51 laptop and desktop. Concrete computer type: IBM, T20, T21, T22, T23, A20, A21, A22, DELL640, TOSHIBA 4030, etc. Specification: 100% new and high quality material:PCB Size ( about ): 6 x 5.5 x 1.5cm M/M USB cable Length: 51cm Interface Type: 25 pin male printer connector No need to install ANY software. 2 keys for codes PREV /NEXT Intercept and hex the code of your booting computer. 5 LED indicator: +12, -12 +3V3, CLK, FRAME. Package include : 1 Pcs 4 Digit Card Motherboard Post Tester Note: Please be aware that due to your computer monitor display the color may have some difference between the picture and the real item. There is 2-3% difference according to manual measurement.