Supported System Software: 7.5.1, 7.5.3 SCSI: DB-25 Serial Ports: 2 Sound Output: stereo 16 bit. ADB: 1 Ethernet: use Newer Technology 7ET-L10, 7ET-L10/100, 7ET-C10 or 7ET-C10/100 Machine Gestalt ID: 41 Minutiae: Upgraded with one SIMM at a time. Serial Port with the phone icon supports synchronous modems, with handshaking on both output and input supported. Has 4MB ROM and a 1.44MB SuperDrive.