Features: 1.Compliant with PCI-E and Mini PCI-E industry s, you can use with confidence. 2.PCI-E 1X slot side open design with support for PCI-E 1X/4X/8X/16X cards and USB devices. 3.Strong compatibility, can be compatible with multi-system computer. 4.An external 5V/12V power supply is required for powering USB and PCI-E devices, 12V is supplied to the PCI-E 1X device, and 5V is supplied to the USB. 5.This adapter card can efficiently test the PCI-E card, effectively saving time and labor cost in mass production and testing. specification: Compliant with PCI-E and Mini PCI-E industry s, you can use with confidence. PCI-E 1X slot side open design with support for PCI-E 1X/4X/8X/16X cards and USB devices. Strong compatibility, can be compatible with multi-system computer. An external 5V/12V power supply is required for powering USB and PCI-E devices, 12V is supplied to the PCI-E 1X device, and 5V is supplied to the USB. This adapter card can efficiently test the PCI-E card, effectively saving time and labor cost in mass production and testing. s: Material: ABS Size: Approx. 5 x 3cm / 1.97 x 1.18in Color: Green Package list: 1 x Riser Card 1 x Accessories package 1 x Screwdriver 1 x 4Pin Cable