SCSI: none Serial Ports: 1 Sound Output: mono 16 bit. ADB: see below Ethernet: see below Machine Gestalt ID: 118 PRAM Battery: service center replacement only Minutiae: 9.5” active matrix LCD - 16-bit (thousands of colors) Display. Has a 152-pin PDS (Processor Direct Slot) connector for connecting to the Duo Docks. Serial Port with the phone icon supports synchronous modems, with handshaking on both the output and input. Has 4 MB ROM.