IBM ThinkPad Power Series Hardware Maintenance Service page 42

System Board Connectors
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72 ThinkPad Power Series 820
Connector
Device
SI Power Shutdown Switch
JI System Bus Connector
J2 External Display Connector
J3
Serial Connector
J4 Parallel Connector
15
External Diskette Drive Connector
J6 SCSI-2 Connector
J7 External Input-Device Connector
JS Interposer Card
H O DC/DC Card
J 11 Diskette/CD-ROM Drive Connector
112 Standby Battery Connector
11 3 Backup Battery Connector
114
Video Card
Jl5
CPU card
J16 Memory Card
117 Password Override Pin
118 Audio Card
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Hardware Maintenance Reference 73