Dell DW1397 Broadcom 4312 Wireless Card WLAN WIFi Wireless Card 802.11a/b/g 54 Mbps BCM94312HMG Note: this wireless card could not work on IBM/Lenovo/Thinkpad and HP version laptop Dell DW1397 Broadcom 802.11a/b/g compliant 2.4 GHz or 5 GHz frequency band 54 Mbps data transfer rate The Dell Wireless 1397 802.11g Mini PCI Express Internal Card is designed as a single band card supporting 802.11b/g networks.