Motherboard

For a list of differences between these mainboards, also see Hardware Revisions.

Xbox 1.0

Xbox Version 1.0 Motherboard

The following table is based on a Xbox 1.0^{[citation needed]} retail board.

Device	Loc.	Part Number	Manufacture	Description
U2D1	D-2	Pentium III (Coppermine)	Intel	733MHz CPU 133MHz FSB 16Kb L1 cache 128Kb L2 cache
U2T1	T-2	SC1186	Semtech	Programmable Synchronous DC/DC Converter
U3B1	B-3	LM358D	Phillips	Dual Operational Amplifier
U3B2	B-4	XGPU	nVidia	Graphics Processing Unit
U3R1	R-3	CY23S05	Cypress	Low-Cost 3.3V Spread Aware Zero Delay Buffer
U3T1	T-3	K4D263238M	Samsung	1Mx32Bitx4 DDR Synchronous RAM
U4B1	B-4	CX25871	Conexant	Digital Video Encoder (same pinout as Bt868/869)
U4G1	G-5	SC1110CS	Semtech	Sink and Source DC/DC Controller for Termination Power Supply
U5F1	F-5	K4D263238M	Samsung	1Mx32Bitx4 DDR Synchronous RAM
U6A1	A-6	LF353	Texas Instruments	Dual General-Purpose JFET-input Operational Amplifier
U6B1	B-6	WM9709	Wolfson Micro	High-quality stereo audio DAC (Digital to Analog converter)
U6D1	D-6	K4D263238M	Samsung	1Mx32Bitx4 DDR Synchronous RAM
U6E1	E-6	MCPX	nVidia	Media and Communications Processor
U6F1	F-6	ADM1032	Analog Devices	+-1°C Remote and Local System Temperature Monitor
U6N1	N-6	K4D263238M	Samsung	1Mx32Bitx4 DDR Synchronous RAM
U7B1	B-7	1893AF	Integrated Circuit Systems	3.3V 10Base-T/100Base-TX Integrated PHYceiver
U7B2	B-7	PIC16LC63A-04/S0	Microchip	Low voltage 8bit CMOS microcontroller with A/D converter
U7C1	C-7	388R	Integrated Circuit Systems	Quad PLL Quick Turn Clock Synthesizer
U7C2	C-7	BR24C02	Rohm	I2C BUS compatible Serial EEPROM
U7C3	C-7	331M	Integrated Circuit Systems	Single Output Clock
U7D1	D-7	M29F080A	ST Microelectronics	8 MBit (1MB X8, Uniform block) single supply flash memory
U7P1	P-7	<empty>	<n/a>	<n/a>

Device	Part Number	Manufacture	Description
U2	TUSB2046B	Texas Instruments	4-Port Hub for USB w/Optional Serial EEPROM Interface

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