Features: The X872 is a USB 3.0 to NVMe Solid Disk expansion board specifically for RPi 4, providing easy and fast way to expand the storage capacity. M.2 NVMe Solid Disk shield is storage solution For RPi 4 ；Supports M.2 NVMe SSDs up to 4TB A variety of M.2 Solid Disk size can connection (including 2280, 2260, 2242 and 2230). The Fast Speed USB 3.0 port enables fast data transfer speeds of up to 5Gbps, allowing you to move large amounts of data very quick. In addition, LEDs indicating read or write status support booting the operating system from the Solid Disk for faster launching of applications,and file copying. Support for booting operating systems from Solid Disk, faster application opening; Specifications: Model：X872 Expansion Board Size:about 87.3mmx56mm/3.44x2.2inch Supports M.2 NVMe Solid disks up to 4TB; Supports 2280, 2260, 2242 and 2230, M.2 NVMe Solid disks Integrated USB3.0 5Gbps connection Ensures adequate power supply through GP10 pin header and USB port. Package Includes: 1Set X872 Expansion Board note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color!