Asus P4B-M 2.2Motherboard layout, Figure 2-2Motherboard Layout, Chapter 2: Hardware information

2.2Motherboard layout

24.4cm (9.60in)

PS/2KBMS	KBPWR	USBPWR01
T: Mouse		CPU_FAN
B: Keyboard

Bottom: Top:									Socket 478
	USB1 RJ-45
	USB2
	COM1
			PARALLEL PORT
	COM2				ATX12V					Intel 845
		AUDIO	Line								Memory
			Line							Hub (MCH)
			Out								Controller
		_	In
		GAME
			In	SYSTEM_FAN
			Mic
						Realtek	RTL8100
			LAN_EN
								Accelerated Graphics Port (AGP)

DIMM Socket 1 (64/72-bit, 168-pin module) DIMM Socket 2 (64/72-bit, 168-pin module) DIMM Socket 3 (64/72-bit, 168-pin module)

0 1 2 3 4 5

SERIRQ_CON

	Super
		I/O
		IR_CON
	Power Connector	SMARTCON
	ATX
FLOPPY	SECONDARY IDE	PRIMARY IDE	24.4cm (9.6in)

P4B-M

INT_LINEIN				Intel I/O
BCS1		PCI1
BCS2			Controller
AUX	CD
				Hub
		SPDIF_C	CR2032 3V	(ICH2)	CLEAR CMOS
MIC
		PCI2	Lithium Cell
HPHONE			CMOS Power
					BUZZER
		®
MODEM		PCI3	ASUS	USBPWR23
C-Media			ASIC		CNRUSB0
CMI8738 6CH
Audio Controller				CNRUSB1
		CNR_SLOT	LED1
					USB23

2Mbit

Firmware

Hub

DIP_SW

HDDLED

PANEL

Figure 2-2 Motherboard Layout

The audio controller, external GAME/AUDIO connectors, internal audio connectors are optional components, and present in audio models only. The components are grayed out in the above motherboard layout.

2-2 Chapter 2: Hardware information