Part Number: 593339-B21Description: HP 593339-B21 4GB 1RX4 PC3 10600R Memory KitManufacturer: HPFree Fed Ex/USPS Shipping on 593339-B21. The 593339-B21 is tested by our inhouse Technicians. The HP 593339-B21 4GB 1RX4 PC3 10600R Memory Kit comes with a 1...