Supported System Software: 6.0.8, 7.0.1, 7.1, 7.1.1 (Pro), 7.5, 7.5.1, 7.5.3 SCSI: HDI-30 Serial Ports: 1 Sound Output: mono 8 bit. ADB: 1 Ethernet: none Machine Gestalt ID: 24 Minutiae: Uses pseudo-static memory. Passive Matrix 1 bit (Black & White) Display. Serial Port with the phone icon supports synchronous modems, with handshaking on both output and input. Has 256KB ROM and a 1.44MB SuperDrive.