SCSI: DB-25 Serial Ports: 2 Sound Output: mono 8 bit. ADB: 2 Ethernet: none Machine Gestalt ID: 44 PRAM Battery: 3.6V lithium (Maxell ER3S, Radio Shack 23-026) Minutiae: The IIvi is not sold in the United States. Upgraded four SIMMs at a time. Serial Port with the phone icon supports synchronous modems, with handshaking on both the output and input. Has 1MB ROM and a 1.44MB SuperDrive. This machine contains a 32-bit Processor Direct Slot (PDS).