52
Connectors
The following tables lists important connector information.
Jumper
Cable Description
J1 N/A AGP slot
J2-J5 N/A 168-pin DIMM slots
J7-J8 MCBL121A Primary/Secondary IDE connectors
J9 MCBL106A Floppy disk drive connector
J10 Not included Secondary hard disk drive activity LED connector
J11 N/A Keyboard/mouse connectors
J12 N/A USB ports; both available when pins 1-2 on W5-
W7 are jumpered
J13-J14 Not included COM ports
J15 N/A Parallel port
J16-J20 N/A PCI slots
J21 Not included PCI sideband signal connector (do not connect
cable to J22)
J22 Not included Intel PCI sideband signal connector (do not
connect cable to J21)
J23 N/A ISA slot
J27 P1 Power supply connector
J28: pins 1, 2 MCBL250AB Main power switch
J28: pins 13-16 MCBL247AA IDE drive LEDs
J28: pins 18, 20 MCBL347A0 Power LED
J28: pins 22, 23 Not included Reset
J28: pins 24-27 MCBL373A0 Speaker (pin 24 +5V pin 26 on-board speaker, pin
27 external speaker)
J30 N/A Primary processor cooling fan connector
J31 N/A Secondary processor cooling fan connector
J32 N/A Chassis cooling fan
J34 Not included Chassis intrusion sensor
J35 CD-ROM audio
J36 N/A Video audio input
J37 N/A Auxiliary audio input
J38 N/A Modem/telephony I/O
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