4x Oculink SFF-8612 SFF-8611 to PCIE PCI-Express 16x Adapter with ATX 24pin Power Port for Mainboard Graphics Card Oculink 4x connectors are internal and external small form factor PCI-E connectors and cables optimized for the client and market.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 atx power port support 12V power. Please connect the extral power for your PCI-E card if the power is insufficient. (The switch is for ATX power) size: 133 x 64.5mm Material: PCB colour: Black Package Contents: 1 x Adapter Card 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.