Commodore 128 Programmer's Reference Manual page 662

652 COMMODORE 128
APPENDIX C
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CONNECTORS/PORTS FOR
PERIPHERAL EQUIPMENT
1. Power Socket 7.
2. Power Switch 8.
3. Reset Button 9.
4. Controller Ports 10.
5. Expansion Port 11.
6. Cassette Port 12.
Serial Port
Composite Video Connector
Channel Selector
RF Connector
RGBI Connector
User Port
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