Device Network & Wireless Cards Manufacturer Lenovo CPU/Chipset(s) Broadcom BCM5720 Network Technology 1000BASE-T 100BASE-TX 10BASE-T Interface/port(s) PCI Express -- PCI Express x1 8P8C modular connector (RJ45) 8P8C modular connector (RJ45) Operating System(s) Windows 7 64bit Use the Lenovo website for updates.