SCSI: DB-25 Serial Ports: 2 Sound Output: stereo 8 bit. ADB: 2 Ethernet: none Machine Gestalt ID: 88 PRAM Battery: 3.6V lithium (Maxell ER3S, Radio Shack 23-026) Minutiae: Can be used as a Macintosh computer or as a remote controlled Television. Simultaneous use of Computer and Television is not possible. Mac TV also functions as a CD player with built-in speakers. Serial Port with the phone icon supports synchronous modems, with handshaking supported on the output, but not the input. Has 1MB ROM and a 1.44MB SuperDrive.