Hewlett Packard's SureStore Expansion Tower allows you to add an additional seven 32X CD-ROM drives to your HP SureStore CD-ROM Server, CD-ROM Server Plus, or DVD-ROM Server. The J4148A includes seven SureStore 32X CD-ROM drives, a one meter SCSI cable, and a SCSI terminator. The 32X HP drives read CD-ROM, CD-R and CD-RW media and feature a 512KB buffer and a 85ms average random access time.All HP SureStore CD and DVD servers and towers can be mounted in standard 19-inch HP racks with the C2982A HP tower rackmount kit.