7-8 www.hp.com Technical Reference Guide
Power and Signal Distribution
7.4 Signal Distribution
Table 7-6 lists key reference designators for LEDs, connectors, headers, and switches used on the
system boards for systems covered in this guide. Unless otherwise indicated, components are
used on all system boards.
Table 7-6.
System Board Component Designations
Designator Component function
CR1 +5 VDC LED
E1 Descriptor table override header
E14 SPI ROM boot block header
E49 / JP49 Password clear header / jumper
J9 Stacked RJ-45 & dual USB connectors
J10 Quad-stacked USB connectors
J20 PCI 2.3 connector
J31 PCIe x1 connector
J32 PCIe x1 connector
J41 PCIe x16 graphics connector
J68 Stacked keyboard, mouse PS/2 connectors
J69 Analog VGA monitor DB-15 connector
J70 Digital DVI-D connector
J78 Stacked audio line-in, headphone/line-out 1/8” jacks
J103 DC input
P1 Power supply connector
P3 Vccp (PWRCPU) header
P5 Control panel (power button, power LED) header
P6 Internal speaker header
P8 System fan header
P9 Chassis fan, primary, header
P10 Diskette drive connector
P23 Front panel audio header
P24 Front panel USB header
P52 Serial port, secondary, header
P53 Serial port, primary connector
P54 Serial port, primary header
P60 SATA0 (controller 1, primary master) connector (dark blue)
P61 SATA1 (controller 1, secondary master) connector (white)
P62 SATA2 (controller 1, primary slave) connector (light blue)
P63 SATA3 (controller 1, secondary slave) connector (orange)
P70 Primary CPU (heatsink) fan header
P126 Parallel port header
P150 Media reader USB header
SW50 Clear CMOS switch
XMM1, 2 Memory slots, channel A (white)
XMM3, 4 Memory slots, channel B (black)
XU1 Processor socket
XB2 Battery socket
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