The AppleCD 300e Plus was among a few nearly identical SCSI-connected external CD-ROM drives manufactured by Apple. All AppleCD models used a SCSI (Small Computer System Interface, pronounced “scuzzy”) connection. According to PC Magazine, SCSI was “used in mainframes, servers and storage arrays in the late 1980s and 1990s… The SCSI bus connects up to 15 devices in a daisy chain topology, and any two can communicate at one time: host-to-peripheral and peripheral-to-peripheral.”
The AppleCD had a 1x Read-Only CD-ROM that could read CDs with with up to 750 MB of data. Ports on the back of the device included two 50-pin Centronics SCSI connectors, red and white audio RCA connectors, and device power input. A front input included a mini-headphone audio jack. The AppleCD could read five CD formats: CD-Audio, CD-ROM, HFS, ProDOS, and High Sierra.
Several models of the AppleCD drive were made, including the SC, SC Plus, 150, 300, 300e, 300i plus, 600i, 600e plus, and 1200i. The “e” designates external devices using the same design as this AppleCD 300e Plus.
SCSI (Small Computer System Interface) was used to physically connect two computers to peripheral devices and transfer data between them. SCSI was used to connect hard disk drives, tape drives, scanners, CD drives, and other devices. SCSI is pronounced “scuzzy.”
The examples shown here include both an unopened cable in the 1992 packaging and an opened example that I found in an AppleCD 300e Plus (1995) box.
I remember using an Apple SCSI System Cable to connect external Apple CD-ROM drives, scanners, and hard drives. The thickness of the cable made it difficult to bend and contributed to a high failure rate.
The SCSI (Small Computer System Interface) was used to physically connect two computers to peripheral devices and transfer data between them. SCSI was used to connect hard disk drives, tape drives, scanners, CD drives, and other devices. SCSI is pronounced “scuzzy.”
The Apple SCSI Active Terminator was used to allow “active termination” in a chain of SCSI devices. Active Termination is defined as an advanced form of terminating SCSI cables that controls “the impedance at the end of the SCSI bus by using a voltage regulator, not just the power supplied by the interface card” (myoldmac.com).
Although different SCSI interfaces were available, this terminator uses the original parallel SCSI interface.