For Raspberry Pi CM4 PCI-E to M.2 Adapter Compute Module Adapter Card Features: 1. PCI-E To M.2 Adapter Card; Supports Nvme Protocol M.2 Interface Hard Disk/High-Speed Reading And Writing/Improving Work Efficiency; Suitable For Raspberry Pi Compute Module 4 2. Pcie Interface Is Universal; Supports Motherboards With PCI-EX1/X4/X8/X16 Card Slot Interfaces, And Supports Cm4 3. High-Speed Reading And Writing; Compared To Mechanical Hard Drives, It Has Faster Reading And Writing Speeds, Greatly Improving Hard Drive Performance. 4. Support Nvme Hard Disk Protocol 5. Compatible With M.2 Hard Drives Of Different Sizes Description: 1. Type: Adapter Card 2. Specifications: PCI-E To M.2 Adapter Card 3. Size: About 90.3 x 35.6mm 4. Material: PCB color: as shown Package Contents: 1 x Riser Card 1 Set Of Screw Pack Installation Tools Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use 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.