X1008 is designed for data storage purposes and does not currently support booting from HDD/SSD using existing firmware. hard drives are not partitioned and need to be partitioned and formatted when used for the first time before they can be accessed in Explorer. Please use a DC 12V power adapter to power both X1008 and Pi5 through DC5521Jack. No additional power supply is required for Pi5 (please note that 3.5-inch hard drives require a voltage of 12V) X1008 is a PCIe to dual SATA HDD/SSD expansion board designed for Raspberry Pi 5. It supports 1 3.5-inch HDD and 1 2.5-inch HDD/SSD, providing large-capacity storage and high-speed storage solutions for your for Raspberry Pi 5, giving full play to its storage capabilities. The SATA 3.0 interface speed can reach up to 5Gbps. Compatible with for Raspberry Pi 5B and supports expansion of other HATs of for Raspberry Pi; Supports simultaneous connection of 1 3.5-inch HDD and 1 2.5-inch HDD/SSD; Powered from for Raspberry Pi5 via pogo pins; Complies with PCI-Express v2.0 specification and backward compatible with PCI-Express v1.0 Supports HAT+ STANDBY power state, automatically shuts down SATA devices when Pi5 is powered off; Supports communication rates of 5.0 Gbit/s, 3.0 Gbit/s and 1.5 Gbit/s; Compatible with SATA 6G, 3G, 1.5G hard drives; Power supply instructions Power supply: 12Vdc/-5%≥3A, through the DC power jack 5.5x2.1mm of the X1008 expansion board Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Black Material:PCB Package Contents: 1 x Expansion Board Kit