1、Totally compatible with for Raspberry Pi 4/3/2/B+ models with the 40-pin GPIO header 2、Clip‑in mini PCI‑E socket is compatible with worldwide LTE, for UMTS/HSPA+ and for GSM/GPRS/EDGE coverage with regional or global modules which work with different frequencies and carriers 3、For NANO SIM card socket can easily reachable from the upside of the HAT 4、Can be used standalone with PC/Laptop over micro USB without stacking with for Raspberry Pi 5、Efficient and low quiescent current power circuit can support up to 3Amps 1 x 3G/4G LTE Base Hat1 x USB 2.0 to Micro USB Cable1 x Screw Driver1 x Accessories Package1 x User Manual Item Type: 3G/4G LTE Base HatWorking Temperature Range: -40℃ ~ 80℃Compatible with the Following Brand Boards: 1.For Raspberry Pi 4, 3, 2, B+ 2.For Asus Tinker Board 3.For Rock 644.For Samsung ARTIK’s Board 5.For Latte PandaCompatible with the Following Brand Mini PCI-E Modules: For Quectel: EC25/EC21/ EC20 /UC20/ LTE-EP06For Sierra: AirPrime MC SeriesFor Telit: LM960, LE910V2, HE910, LE910CxFor Huawei: ME909s-120, ME909s-821, etc.For Simcom: SIM7100, SIM7230, etc.For ZTE: ZM8620, etc.For U-Blox: MPCI-L2 SeriesFor Thales: PLS62W, mPLS8, mPLAS9Size: Approx. 85 x 55mm / 3.3 x 2.2in25mm / 1in