HP RALINK RT5390 802.11b/g/n Wireless Half Mini Card WMIR-280GN 638403-001 HP RALINK RT5390 802.11b/g/n Wireless Half Mini Card WMIR-280GN 638403-001 Manufacturer: RALINK Part Number: 638403-001 Model: RT5390 M/PN: WMIR-280GN