http://www.gadgettown.com/Broadcom-BCM4312-Laptop-Wireless-Network-Card-PCI-Interface-N00260.html
This Broadcom BCM4312 General Laptop Built-in Wireless Network Card with PCI Interface. You can stay connected while on the go. It offers fast, wireless broadband speeds to help you achieve LAN-like mobility. It helps maximize your productivity while maintaining contact with clients, colleagues and family.