ThinkPad Quectel SDX24 EM120R-GL 4G LTE CAT12 PCIE WWAN module II is a wireless communication module with receive diversity. It helps provide data connectivity and network with standard PCI Express M.2 interface. With downlink speed of up to 600 Mbps and uplink speed of up to 150 Mbps, the 4G CAT12 WWAN module enhances the network reliability and availability of your ThinkPad, and provides a great cellular solution for travelers to sustain mobility while using PC devices.