Compatility - It's compatible with 4G LTE Mini PCIe modules from brands like Quectel EC25-AF EG25-G Mini PCIe etc. Application - It can be widely used for M2M IoT applications such as industrial router, home gateway, STB, industrial laptop, consumer laptop, industrial PDA, rugged tablet PC, video surveillance and digital signage etc. Reliability - It adopts industrial electric circuit design to make sure the module can always be working fine and never offline even under severe environment. Interfaces - There are Mini PCIe Female connectors for connecting 4G LTE module, Mini PCIe Male connector for connecting to other devices, SIM card slot(Push-Push Type) which doesn't support hot-plugging.