Durable to use. Install PCI-E device freely according to dimension and position of computer case. perfect for small computer & server case, like 1U & 2U. One end is PCI-E 16X male and another end is PCI-E 16X female. Gold plated contacts for best connectivity and long life. Expansion for 1 slot with cable. No Driver necessary and jump-less. The Flexible Single Slot PCI-Express 16x Riser Card makes the PCI-Express 16x Card away from motherboard , with the PCI-Express socket directly in line with the socket on the motherboard.. PCI-Express 16x Slots. PCI Express Specification Version 1.0 Compliant. Fits 1U / 2U Rackmount Chassis. Need some professional knowledge to use this product. Material: Plastic/Metal Dimension: 19 x 10.5 x 0.7cm Package included: 4x PCI-E 16X Riser Card Extender Cable Only the above package content, other products are not included. Note: Light reflection 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.