The HP 392176-001 is available from Calhoun Technologies. Calhoun Tech can help your company save up to 80% on IT Hardware. Manufacturer: HP Part Number: 392176-001 Details: HP 392176-001 512 MB 1 x 512 MB DDR2 SDRAM 533 MHz DDR2-533/PC2-4200 ECC Unbuffered 240-pin DIMM