R4GW0 - WiFi Card Broadcom BCM943142HM; DW1704 Mini PCI-E 802.11b/g/n; Bluetooth Inspiron 17R (7720) Part Number: R4GW0 Brand: Dell Model Number: Inspiron 17R (7720) Laptop/Desktop replacement Parts Note: Picture may slightly vary from actual product. Please check the description before Buying!