Features: The DeskPi Lite expansion board forRaspberryPi 4 is only for the DeskPi Lite phones case and supports the B key. It is for SATA SSDs, which are widely available and provide high-speed data transfer rates. With the SATA SSD drive expansion board, you can choose from various SATA solid drives available in the market, allowing you to customize storage capacity according to your needs. This kit is only used to upgradeNAS functionality of DeskPi lite and is suitable for users who have DeskPi lite and need to expand external disks. The DeskPi Lite chassis and SATA SSD are not included in the packaging and require additional purchase. For DeskPi Lite machines Specifications: DeskPi Lite SATA Expansion Board forRaspberryPi4B 2GB /4GB /8GB, Supports B-Keys Only compatible DeskPi Lite Case Material: Plastic Enclosure Size：approx 138x94x18mm/5.43x3.7x0.71in Inner Board Size：approx 87x55mm/3.42x2.16in Package Includes: 1PC SATA Expansion Board note: Due to the light and screen difference, the item color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement.