[PCIe Interface]The for 5 supports PCIe x1, and is compatible with Gen2 and Gen3 modes. [M.2 M-key Interface, Supports NVMe Solid State Drives]Supports 2280/2242/2230 size SSDs [SSD Boot System]Supports booting from an NVMe SSD and storage expansion, The SSD can also be used solely for storage expansion, with the system booting from a TF card [M.2 ]The expansion board's power circuit is designed with a 2A current, limited by the 5's PCIe interface current limit (5V1A), capable of providing more than 3.3V1.5A output to the solid state drive. Typically, the rated current of solid state drives may be 2.5A, 2.7A, or even 3A, but these currents correspond to the limit of X4 mode, Since the for 5 only supports X1 mode, the actual current used is much less than the rated current, and our design meets the needs of most hard drives. [Dual LED Indicators] Board-mounted power indicator ("PWR") and M.2 SSD activity indicator ("ACT") [High-Quality Components] Utilizes high-quality electronic components and immersion gold process, lead-free production Four M2.5 fixed holes, with a recessed design above the board for easy operation of the 40Pin GPIO Note: Don't include the M.2 SSD & RPI 5; Colour:purple+silver Material:PCB+aluminum Package Contents: 1 x MPS2280 expansion board 1 x FPC cable 4 x copper pillars 1 x heat sink with 3 cooling pads 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.