1. The X825 expansion board provides a complete storage solution for the latest for Raspberry Pi 4 Model B 8GB/4GB/2GB, it supports 2.5-inch SATA Hard Disk Drive (HDD)/Solid State Drive (SSD). X825 card only has 2.5-inch SATA HDD/SDD HDD interface;2. Supports up to 4tb 2.5inch sata hard disk drive (hdd)/solid state drive (ssd) (theoretically it can also be used with 6tb or 8tb. But in practice we don't test x825 cards that use 6tb or 8tb hard drives, you can have one try.)3. perfect storage solution for Raspberry Pi 4 Model B4. Power for Raspberry Pi via Pi's 40-pin header5. The red indicator LED indicates the power-on status, and the blue indicator indicates the device status6. USB 3.1 Gen1 to SATA 6Gb/s Bridge Controller7. Fast file transfer via high-speed USB 3.1 connection from PC or Mac8. Power for Raspberry Pi - RPI 4 requires no additional powerProduct Name: Hard Disk Expansion BoardModel: X825 V2.0Interface: USB3.0, DC power jack, 2.5-inch hard disk interface, 5V PWR outputApplicable products: Suitable for Raspberry Pi 4B with NAS storage hard drivePower supply: AC100-240V input 50/60HZ, 5V DC 4A outputProduct size: 107.2x85mmColour:blackMaterial:PCB+MetalPackage Contents:1 x X825 V2.0 storage expansion board1 x screw packOnly 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.