Lenovo IBM Laptop BCM943227 BCM943227HM4L 802.11bgn Half Height Wireless Mini PCI-E Card Brand: BroadCom Model : BCM943227HM4L/BCM943227 Device Class: 802.11 b/g/n Interface: Half Mini PCI-e Compatible: Only work on IBM version laptop Z370 Z570 Z475 B475 M71Z