Feature: 1. COMPATIBLE MODELS: 3G 4G LTE Base HAT for RasPi, for Tinker Board, for ARTIK, for Rock64 Media, for Liber Computer Board, fully compatible with for RasPi models with 40pin GPIO connector (4, 3, 2, B+). 2. COMPATIBLE MINI PCIE MODULES: for Quectel EC25/EC21/ EC20 /UC20/ LTE EP06; for Sierra for AirPrime MC Series; for Telit LM960, LE910V2, HE910, LE910Cx; for ME909s 120, ME909s 821 and more ME909s 821 and more; for SIM7100, SIM7230 and more; for ZTE ZM8620 and more; for U Blox MPCI L2 Series; for Thales PLS62W, mPLS8, mPLAS9. 3. WITH SIM CARD SLOT: The NANO SIM card slot is located on the top of the HAT and is easily accessible for easier use. 4. ACTIVE COOLING: The cooling fan is designed with active cooling method, heat can be discharged in time to maintain high speed operate. 5. SEPARATE SWITCHES: LED and fan have separate switches to control the LED and fan separately, which will not bring a blinding feeling when used at night. Specification: Item Type: 3G 4G LTE Base HAT for Tinker Board Material: ABS, PCB Card Slots: 2xNANO SIM Card Slots(without SIM card), 2xSMA Antenna Ports, 1xmini PCI E port, 2xTYPE C Ports, 1x Audio Port LED: Automatic Color Changing LED Fan: Built in Compatible With the Following Brands of Mini Pcie Modules: for Quectel: EC25/EC21/ EC20 /UC20/ LTE EP06 for Sierra: for AirPrime MC Series for Telit: LM960, LE910V2, HE910, LE910Cx for ME909s 120, ME909s 821, and more for SIM7100, SIM7230, and more for ZTE: ZM8620, and more for U Blox: MPCI L2 Series for Thales: PLS62W, mPLS8, mPLAS9 Compatible With the Following Brands of Boards: for RasPi 4, 3, 2, B+, for Tinker Board, for Rock 64, for ARTIK's board, for Latte Panda. Package List: 1 x 3G 4G LTE Base HAT1 x USB Cable2 x Antenna3 x IPX1 Cable1 x Screwdriver1 x Screw Bag