The ThinkPad Fibocom L850-GL 4G LTE CAT9 III is a highly integrated 4G WWAN module which uses a M.2 form factor interface. With a downlink speed of up to 450Mbps and an uplink speed of up to 50Mbps, the L850-GL is the perfect cellular solution for world travellers' devices that need top connectivity speed anywhere LTE is present. It is a top application choice for you to upgrade the ThinkPad from lower speed modules.