Standard MCIO 4X 38Pin Mini Cool Edge IO input to SFF-8639 U. 2 NVMe interface; Full PCIe 5.0 x4 bandwidth, backward compatible with PCIe 4.0 / 3.0 for lossless NVMe transfer; Built-in power branch supplies stable voltage directly to U. 2 SSD without extra wiring; Gold-plated contacts + multi-layer EMI shielding optimize signal integrity for Gen5 high-speed signal; 50cm slim braided flexible cable, space-saving layout for compact rack & workstation chassis