OCuLink bidirectional transmission, matched with SFF-8611 cable to connect motherboard SFF-8612 port and external M. 2 NVMe enclosure; Exclusive M-Key M. 2 slot, only compatible with 2280 size PCIe NVMe SSD, not support SATA M. 2, B+M key or other length solid drives; PCIe 4.0 x4 full bandwidth up to 64Gbps, low latency, stable high-speed read & write for large file transmission; Metal housing with passive heat dissipation, built-in work status LED indicator to monitor SSD running condition in real time; Independent external DC power supply interface, avoids insufficient power from mainboard OCuLink port during long-time heavy load work