HP dc5850 Signal Distribution, System Board Component Designations, Designator Component function

Power and Signal Distribution

7.4Signal 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

7-8 www.hp.com Technical Reference Guide