The Sierra EM7345 04X6014 4G LTE WWAN Card is a wireless network card specifically designed for Lenovo ThinkPad laptops. It is a PC Card Type IV with two ports and operates on a voltage range of 3.3V. The card is Wi-Fi certified with 802.11n technology and features an NGFF interface for compatibility with Lenovo devices. Manufactured by SierraWireless in China, this card provides reliable 4G LTE connectivity for seamless network access on the go.