GC111 is an industrial grade 4G LTE wifi router (CPE) ,made of metal case , RJ45 port x 4, support 32 WiFi users , use micro SIM card ,detachable SMA antenna x 4 ( user can connect other antennas through SMA ports also) . additional 4G cable extend antennax 2 (if necessary , user can use them to extend 4G range ) ,it has 2 power input ports ( 12V + 5V , so user can use it on vehicle or by powerbank outdoor ). GC111 use American QUALCOMM 4G chipsets, instead of other cheap chipsets , best chipset give you best performance !