Computer Motherboard LED 4 Digit Analysis Diagnostic Test POST Card PCI The Card is named POST (Power On Self Test) card too. It could display the error code by the result of POST. Then you would soon determine system， or blank screen.You can check your computer by our POST and don't have to open motherboard.We have specification for POST card. If you don't know how to do， you can follow the lead. English and Chinese.We have descriptioni of LED displays and you can see Error code table to check your computer.Size: 7.9cm*5.8cm(not include LED size)LED Size: app. 5.2cm*2cm*0.7cmColor: RedWith alarm voice， you can know where you get wrong.If you forget your password. Don't worry about it. Omnipotent password and Discharge by software can help you to solve it.Suitable type: *PHOENIXBIOS4.01 TO 6.0 BOIS PC AND DESKTOP *AMIBIOS6.24 AWARDBIOS4.51 BOIS PC AND DESKTOP IBM T20 T21 T22 T23 A21 A22 A20 DELL640 TOSHIBA 4030 etc.In the Box:Card*1 with Chinese and English SpecificationNote:Please pay attention to the type.Please kindly note : Items will be repackaged to save your shipping charge & to be environmentally friendly. We guaranty the item will be protected well in buble bags， No retail box!