PCI-E 16X 8X PCI Express Slot Tester Card For Motherboard Detect The Southbridge Short Or Open PCI-E With Light Tester _x000D_ 1. An external 12V DC power supply to the test card, and plug in the corresponding motherboard PCI-E slot. _x000D_ 2. Press the contact switch on the test card, the the test lights turn on the test card all lit, if the light does not shine, should check Southbridge pin open or short circuit isolation capacitance is damaged. _x000D_ 3. PCI-E test card is mainly used to repair computer motherboards do not work (digital card shows FF or not show), job insecurity, the failure of the motherboard video card does not display _x000D_ _x000D_ colour:Green _x000D_ Material:Metal, plastic _x000D_ _x000D_ Package Contents: _x000D_ 1 x Check card _x000D_ _x000D_ Only the above package content, other products are not included. _x000D_ Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm._x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_