IBM 42R4057 server / storage / networking hardware HDD

The IBM 42R4057 carries the identical ‘HDD CBL HDD’ source label as the neighbouring part number 42R4058 also carried in this catalogue, and is a genuine IBM internal hard-drive interface cable running between hard-drive-related connection points inside a server chassis, most likely carrying SAS or SCSI signal and power connections from a backplane to an internal drive cage. The two adjacent part numbers most likely differ in cable length or connector orientation for different bay positions within the same chassis family, though no independent vendor datasheet confirming the exact distinction between them could be found. Internal cabling of this kind is entirely specific to the chassis it was designed for, and connector positions, routing and required lengths vary between every IBM server generation. Cables are occasionally damaged during drive or component replacement, making a genuine replacement a useful spare when restoring a used chassis to full original working order. Specifiers should confirm exact compatibility, including which bay position this length is intended for, against their specific IBM host system before ordering. Tech-Star (UK-based, shipped worldwide) stocks IBM components to support ongoing server maintenance projects.