Broadcom BCM94331CD Mini PCI-E WiFi Bluetooth Card for Apple iMAC A1418 A1419.

Photo is of actual item pulled from my iMac motherboard.

Comes with two mounting screws

Brand: BroadCom 
Model: BCM94331 / BCM94331CD 
Apple P/N: A1418 / A1419 / 607-8967 
Device Class: 802.11N + BlueTooth