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. The LED and fan each have an independent switch, enabling separate control. This prevents glare 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. Supports 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 64x - Samsung ARTIK board - 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 Only the items listed above are included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement tolerance: ±1–3 cm.