This oculink pci-e converter enables belowing applications: One PCIE PCI-Express 16x 4x device can be connected, The converter can be installed into the system internally through the SFF-8611/8612 oculink interface. The converter support all standard PCI-E 16x 8x 4x card, like USB, LAN, 1394, Audio, Graphics Card. The power port only support 12V 2A power max. Please connect the extral power for your PCI-E card if the power is insufficient. Material: PC+Metal colour: As shown Package Contents: 3 x Adapter 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.