The HP C5540A is a 2.1GB SCSI hard drive designed for enterprise servers and storage arrays from the 1990s and early 2000s. This bare drive features a standard SCSI interface with typical 50-pin or 68-pin connector options, supporting both narrow and wide SCSI implementations depending on configuration. The 2.1GB capacity was common in legacy file servers, tape backup systems, and industrial control systems requiring moderate storage density. The drive delivers characteristic SCSI throughput rates suitable for sequential access workloads on older server platforms. This refurbished unit is compatible with HP ProLiant servers of that generation, Compaq equipment, and third-party systems supporting 50-pin or 68-pin SCSI protocols. Typical applications include system boot drives, transaction logs, or archival storage in maintained legacy environments where original drive compatibility is required.Each unit has been tested and guaranteed functional; available via quote from G5 Network Group.