Object is an external 3.5-in. diskette drive in a metal case styled to coordinate with a NeXT "black cube." It is unusual in that it has a SCSI interface, with two Centronics-style SCSI cable ports, a SCSI ID switch, and a terminator on/off switch. The NeXT computer did not support diskette drives; demand for conventional removable storage prompted OEMs to create products like this, which put a diskette drive on the SCSI chain.