Lenovo PC 300GL Technical Information Manual 6272, 6282 - Page 25

Physical Layout, System Board

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Chapter 2. System Board Features Physical Layout The system board might look slightly different from the one shown. Note: A diagram of the system board, including switch and jumper settings, is attached to the underside of the computer cover. System Board 1 Monitor port 2 Parallel port 3 Universal Serial Bus Port 4 Universal Serial Bus Port 5 Mouse port 6 Keyboard port 7 Serial port 1 8 Ethernet port (some models only) 9 Serial port 2 connector 1 Main power connector (J2) 11 Clear CMOS jumper (J6) 12 Diskette drive connector (J3) 13 Primary IDE connector (J12) 14 Secondary IDE connector (J13) 15 Power LED connector (J8) 16 DIMM sockets (J14 and J16) 17 Configuration switch (SW1) 18 3.3 V power connector (J22) 19 Fan connector (J18) 2 LAN activity LED connector (J24) (some models only) 21 COAST cache module socket (J26) 22 Pentium processor socket 7 23 Riser connector 24 Battery 25 Video RAM expansion sockets (U20 and U25) 26 Wake on LAN connector (J28) 27 Wakeup on Modem/Ring connector (J27) Chapter 2. System Board Features 13

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Chapter 2.
System Board Features
Physical Layout
The system board might look slightly different from the one shown.
Note:
A diagram of the system board, including switch and jumper settings, is attached to the underside
of the computer cover.
System Board
±1²
Monitor port
±2²
Parallel port
±3²
Universal Serial Bus Port
±4²
Universal Serial Bus Port
±5²
Mouse port
±6²
Keyboard port
±7²
Serial port 1
±8²
Ethernet port (some models only)
±9²
Serial port 2 connector
±1³²
Main power connector (J2)
±11²
Clear CMOS jumper (J6)
±12²
Diskette drive connector (J3)
±13²
Primary IDE connector (J12)
±14²
Secondary IDE connector (J13)
±15²
Power LED connector (J8)
±16²
DIMM sockets (J14 and J16)
±17²
Configuration switch (SW1)
±18²
3.3 V power connector (J22)
±19²
Fan connector (J18)
±2³²
LAN activity LED connector (J24) (some models only)
±21²
COAST cache module socket (J26)
±22²
Pentium processor socket 7
±23²
Riser connector
±24²
Battery
±25²
Video RAM expansion sockets (U20 and U25)
±26²
Wake on LAN connector (J28)
±27²
Wakeup on Modem/Ring connector (J27)
Chapter 2.
System Board Features
13