HP 8100 Table 7-6. (Continued), System Board Connector, Indicator, and Switch Designations

Power and Signal Distribution

	Table 7-6. (Continued)
	System Board Connector, Indicator, and Switch Designations
P161	SATA power
SW50	Clear CMOS switch
XMM1	Memory slot (black)
XMM2	Memory slot (white)
XMM3	Memory slot (white)
XMM4	Memory slot (white)
XU1	Processor socket
XBT1	Battery socket

Figure 7-2 shows pinouts of headers used on the sytem boards.

	Power Button/LED, HD LED					Power Button/LED, HD LED
		Header P5 (SFF)				Header P5 (CMT)
	HD LED + 1		2 PS LED +			HD LED Cathode 1				2 PS LED Cathode
	HD LED - 3		4 PS LED -			HD LED Anode 3				4 PS LED Anode
		GND5				GND5				6 Pwr Btn
		Pwr Btn 7		8 GND		M Reset 7				8 GND
	Chassis ID0 9		10 Chassis ID1			+5 VDC 9				10 NC
		GND 11	12 NC			NC 11				12 GND
	Therm Diode A 13			14 Therm Diode C		GND 13
						Chassis ID2 15				16 +5 VDC
		Front Panel Audio				Chassis ID0 17				18 Chassis ID1
		Header P23
						Serial Port B
	Mic In Left (Tip) 1				2 Analog GND
						Header P52
Mic In Right (Sleeve) 3					4 Front Audio Detect#
	HP Out Right 5				6 Sense_1 Return	UART2 DTR- 1				2 UART2 RX DATA
	Sense Send 7
						UART2 CTS- 3				4 UART2 DSR-
	HP Out Left 9				10 Sense_2 Return
						UART2 TX DATA 5				6 UART2 RI-
						GND 7				8 GND
		Serial Port A				+5.0V 9				10 +3.3V aux
						UART2 RTS- 11				12 Comm B Detect
		Header P54
						UART2 DCD- 13				14 -12V
	UART1 DCD- 1				2 UART1 DSR-
						+12V 15
	UART1 RX DATA 3				4 UART1 RTS-
	UART1 TX DATA 5				6 UART1 CTS-			Hood Sense
	UART1 DTR 7				8 UART1 RI-
							Header P125
		GND 9			10 Comm A Detect-
									1 Hood SW Detect
		Hood Lock							2 GND
		Header P124							3 Hood Sensor
	Hood Lock 1			2 Coil Conn
					4 +12V
		GND 5			6 Hood Unlock

NOTE:

No polarity consideration required for connection to speaker header P6.

NC = Not connected

Figure 7-2. System Board Header Pinouts

7-8 www.hp.com Technical Reference Guide