NVMe protocol M.2 interface hard disk, high-speed read and write. Connect to RPI 5 by 16PIN FFC: Design of 16PIN PCIe interface based on for 5. Supports NVMe Hard Disk Protocol: Compatible with M.2 hard drives of size 2230/2242, Supports Gen2 and Gen3 modes, supports booting 5 from SSD. Dual LED Indicator Lights on Board: The working status of the equipment is clear at a glance. On Board Power Monitoring Chip and EEPROM: More stable operation, more convenient setup and debugging Note:Due to different production batches, the appearance is different, which does not affect the use. Colour:Black Material:Plastic+Metal Package Contents: 1 x Expansion Board 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.