The SIERRA EM7345 04X6014 4G LTE WWAN Card is a wireless network card designed for Lenovo ThinkPad laptops. It features two ports and is compatible with various Lenovo ThinkPad models such as X250, X1C, W550, T450, X240, and T440. The card is in ExpressCard form factor and is made by Lenovo, ensuring quality and reliability. With its external interfaces and internal interfaces, this WWAN card provides fast and efficient connectivity options for users in need of a reliable wireless connection on their Lenovo laptops.