MANO SIM Card socket is easily accessible on the top side of the HAT. The cooling fan is designed for active cooling mode, allowing heat to be discharged efficiently. Both the LED and fan have independent switches, enabling separate control. This prevents excessive brightness during nighttime use. Note: Includes cooling fan and ambient light. Compatibility: 1. Compatible with Raspberry Pi models featuring a 40-pin GPIO header (4, 3, 2, B+) 2. Compatible with the following Mini PCIe modules: - Quectel: EC25, EC21, EC20, UC20, LTE-EP06 - Sierra: AirPrime MC Series - Telit: LM960, LE910V2, HE910, LE910Cx - Huawei: ME909s-120, ME909s-821, and others - Simcom: SIM7100, SIM7230, and others - ZTE: ZM8620, and others - U-Blox: MPCI-L2 Series - Thales: PLS62W, mPLS8, mPLAS9 3. Compatible with the following boards: - Raspberry Pi 4, 3, 2, B+ - Asus Tinker Board - Rock 64 - Samsung ARTIK boards - Latte Panda Material: ABS Color: As shown in image Package Contents: 1 x 3G/4G LTE Basic HAT 1 x USB 2.0 to Type-C Cable 2 x IPX1 Cables 1 x Screw Removal Tool 4 x Copper Nuts 6 x Screws Note: This package includes only the items listed above. Other accessories are not included. Lighting and display differences may cause slight color variations between the image and the actual product. Measurement error allowance: +/- 1-3 cm.