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 Graphics card configuration recommendations: 6600 6800 7735 CPU version computers: 5xxx 6xxx 7xxxx ( 6xxx 7XXX series graphics cards must be soldered, and it is not recommended to use AMD7xxx series graphics cards as external graphics cards, the success rate is not high, the same below) series graphics cards, the external graphics card runs in Pcie 3.0 x4 mode, 10 20 series graphics cards, it is recommended to use a soldered version graphics dock (10 20 series graphics cards can use a regular version graphics dock). 11 and above CPU version computers: 5xxx 6xxx 7xxx series graphics cards, 10 20 30 40 series graphics cards, it is recommended to use a soldered version graphics dock; 10 20 series graphics cards can use a regular version graphics dock. Computers with 7840 and above CPUs (such as 8845 CPUs): 5xxx 6xxx 7xxx series graphics cards ( 6xxx 7XXX series graphics cards must be soldered versions. We generally do not recommend using AMD7xxx series graphics cards for external use, as the success rate is low, the same below), 10 20 30 40 series graphics cards. 30 40 series graphics cards are recommended to use soldered graphics ; 10 20 series graphics cards c