Features: 1.The M.2 expansion board expands the support for M.2 SATA SSD to maximize the potential speed of for Raspberry Pi 4B and utilize. Now you will be able to boot through M.2 SATA SSD to achieve faster boot time and larger storage capacity 2.The for Raspberry Pi 4B is normally booted with a TF card by default, which is not as fast as the M.2 solid state drive 3.You can connect the M.2 expansion board through the USB interface and use the M.2 solid state drive as the main storage drive, which greatly improves the for Raspberry Pi Storage read and write speed 4.The M.2 expansion board can be used with the shell, and can be applied to for Nanosound ONE Case 5.M.2 expansion slot, support M.2 module such as M.2 SSD, and then connect to for Pi via USB adapter 6.Come with good bottom design, two vents and four non?slip feet, simple but useful 7.Easy to assemble, just a few steps, no messy wiring, no wrong connection, more stable and safer specification:Item Type: Case for Raspberry Pi 4B Material: ABS+PCB M.2 SATA SSD to USB 3.0 board Accept M.2 SSD NGFF key B and key B+ M SSD Size: NGFF M.2 2280 2260 2242 2230 Chipset: For ASMedia Technologies-ASM1153E Compliant with USB3.0 revision 1.0 Up to 6 Gbps transmission speed Support for Raspberry Pi UASP How to Use: 1. Connect the for Raspberry Pi to the High Definition Multimedia Interface audio board and paste the silicon thermal pad 2. Carefully connect the for Raspberry Pi GPIO to the power supply and cooling plate. Press the POWER ON button to start 3. Use shorter flat head screws to fix the for Raspberry Pi and High Definition Multimedia Interface board assembly to the top case 4. Select power button management mode 5. Connect the M.2 SATA SSD to the M.2 SATA expansion board. The board will accept M.2 key B and M.2 key B + M SATA storage drives 6. Before assembling the bottom plastic cover M.2, insert the micro SD card into the for Raspberry Pi 7. After assembling the M.2 shell, place upright on the back of the shell and connect the USB 3 bridge. 8. Connect the cable on the back, dont forget to press the power button to turn it on PackageList: 1 x M.2 Expansion Board 1 x USB 3.0 Adapter 4 x Screw 1 x User Manual 1 x Gasket