ECS A875M-A, Manual, Page: 5 / 74

1
Introducing the Motherboard
Chapter 1
Introducing the Motherboard
Introduction
Thank you for choosing the A875M-A motherboard. This motherboard is a high
performance, enhanced function motherboard that supports socket
for AMD
Phenom
TM
II/Athlon
TM
II/Sempron
TM
processors (socket AM3) for high-end business
or personal desktop markets.
There is an advanced full set of I/O ports in the rear panel, including PS/2 mouse and
keyboard connectors, one serial port, one eSATA port, eight USB ports, one LAN
port and audio jacks for microphone, line-in and 6/8-ch line-out.
The motherboard incorporates the AMD 870 Northbridge (NB) and SB850 Southbridge
(SB) chipsets. The Northbridge supports the HyperTransport
TM
3.0 interface . The
memory controller supports DDR3 memory DIMM frequencies of 1600 (OC) /1333/
1066/800 *
1
. It supports four DDR3 slots with maximum memory size of 32 GB*
2
.
One PCI Express x16 slot, intended for Graphics Interface, is fully compliant to the
PCI Express Gen2 (version 2.0). In addition, two PCI Express x1 slots are supported.
*2. Due to the DRAM maximum size (4 GB per dimm) at present, the
memory maximum size we have tested is 16 GB.
*1. Due to the limitation of AMD CPU spec, please refer to Memory QVL
for more information.
The SB850 Southbridge supports three PCI slots which are PCI v2.3 compliant. It
integrates USB 2.0 interface, supporting up to fourteen functional ports (eight USB
ports and three USB 2.0 headers support additional six USB ports).
The Southbridge
integrates a Serial ATA host controller, supporting five SATA ports with maximum
transfer rate up to 6.0 Gb/s each and one eSATA port with maximum transfer rate up
to 3.0 Gb/s.