Oculink SFF-8611 SFF-8612 4X to PCIe x16 Graphics Card Adapter with ATX 24Pin Power Supply Port, PCIe 4.0 High Bandwidth eGPU Riser Card for ITX NUC Mini PC Laptop External GPU Motherboard Expansion

This Oculink SFF-8611/SFF-8612 4X to PCIe x16 adapter is a professional eGPU external graphics riser card tailor-made for mini host, compact motherboard and laptop external graphics upgrade solution. It is equipped with two universal Oculink interfaces SFF-8611 and SFF-8612, receiving PCIe 4.0 x4 signal input and converting it into a complete standard PCIe x16 slot to mount full-size desktop independent graphics cards, perfectly solving the performance bottleneck of integrated graphics on thin notebooks, Intel NUC, ITX/STX small chassis and compact embedded motherboards.

Adopting PCIe 4.0 Gen4 transmission protocol, the adapter delivers maximum 64Gbps total bandwidth, directly transmitting pure PCIe data channel without extra protocol conversion loss. Compared with traditional Thunderbolt eGPU docking stations, it features far lower transmission delay, smaller frame rate drop and better real-time performance, ideal for 3A gaming, 3D modeling, video rendering, AI computing, live broadcast hardware encoding and other heavy-load graphic-intensive tasks.

A reserved ATX 24pin independent power supply port is designed on the board, which can be directly connected to the desktop power supply to provide steady and sufficient 12V large current output for high-power gaming graphics cards. It avoids insufficient power supply caused by single Oculink interface power limit, effectively preventing GPU crash, black screen, frequency reduction and unstable operation under full load. The onboard power management chip adds overcurrent, overvoltage, short-circuit and ESD electrostatic protection to safeguard your expensive graphics card and mainboard from surge damage.

The circuit board uses thickened multi-layer high-frequency PCB and gold-plated high-precision connectors, greatly reducing signal attenuation, crosstalk and electromagnetic interference during high-speed PCIe signal transmission, ensuring long-term continuous stable operation under high load. Standard full-height PCIe baffle is matched for fixed installation in computer chassis, neat and firm for cabinet wiring arrangement.

Important Compatibility Notice: This Oculink adapter does not support hot plugging, please completely shut down the host and cut off all power before plugging or unplugging cables and graphics cards. It is mainly compatible with devices with Oculink SFF-8611/SFF-8612 or M.2 NVMe PCIe 4.0 x4 channel breakout, applicable to most mainstream mid-to-high-end discrete graphics cards released after 2015, widely used in mini DIY host assembly, portable workstation transformation, notebook performance upgrade and industrial control equipment PCIe peripheral expansion.