SCSI: DB-25
Serial Ports: 2
Sound Output: mono 8 bit.
ADB: 1
Ethernet: none
Machine Gestalt ID: 23
PRAM Battery: 3.6V lithium (Maxell ER3S, Radio Shack 23-026)


Minutiae:

The Classic II can only be upgraded to 10MB.

Serial Port A supports synchronous modems, with handshaking supported on the output, not the input.

Has 512KB ROM and a 1.44MB SuperDrive.