Chapter 1: Introduction - PCchips M851AG Manual

Chapter 1
Introduction
This motherboard has a Socket-462 processor socket for the AMD
K7 type of processors. You can install any of these processors on
this motherboard. This motherboard supports front-side bus speed
of 400(only for VIA KM400A NB)/333/266/200 MHz.
This motherboard integrates the VIA KM400A/400 Northbridge
along with VT8237/8235CE Southbridge chipsets that supports
built-in AC'97 Codec, 2 DDR400(only for VIA KM400A NB)
/333/266 modules up to 2GB system memory. This motherboard
has one CNR (Communications and Networking Riser) slot to
support Audio and Modem application, two PCI slots and the built-
in 10BaseT/100BaseTX Network Interface (optional).
There is a full set of I/O ports including two PS/2 ports for mouse
and keyboard, one serial port, one VGA port, and one parallel port.
This motherboard supports four back-panel USB 2.0 ports. When
Southbridge is VT8237, there will be two extra USB connectors
USB2/USB3 making four extra USB2.0 ports by connecting the
Extended Module to the motherboard. When Southbridge is
VT8235CE, there will be only one extra USB connector USB2
making two extra USB 2.0 ports by connecting the Extended
Module to the motherboard.
This motherboard is a FLEX ATX size (230 x 200 mm)
motherboard that has power connectors for an ATX power supply.