ASRock 939S56-M Motherboard installation guide. No part of this guide may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRock Inc. Products and corporate names appearing in this guide may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe. ASRock assumes no responsibility for any errors or omissions that may appear in this guide. With respect to the contents of this guide, ASRock does not provide warranty of any kind, either expressed or implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose. In no event shall ASRock, its directors, officers, employees, or agents be liable for any indirect, special, incidental, or consequential damages (including damages for loss of profits, loss of business, loss of data, interruption of business and the like).
This guide introduces the ASRock 939S56-M motherboard, a Micro ATX board featuring a 939‑pin socket for AMD Athlon™ processors, SiS 756 north‑bridge and SiS 965L south‑bridge chipsets, and support for DDR1‑DDR4 memory modules. It includes a brief overview of the board layout, I/O ports, and key specifications.
The document provides detailed installation instructions, including pre‑installation safety precautions, CPU installation steps, and memory module installation procedures. It also outlines BIOS features, power‑up warnings, and basic troubleshooting tips.
| Form Factor | Micro ATX (9.6‑in x 8.8‑in) |
|---|---|
| CPU Socket | 939‑Pin socket supporting AMD Athlon™ 64/64FX/64 X2 |
| North Bridge Chipset | SiS 756 |
| South Bridge Chipset | SiS 965L |
| Memory Slots | 4 x 184‑pin DDR DIMM slots (DDR1‑DDR4, max 4 GB) |
| IDE Interface | ATA 133 (Ultra DMA Mode 6) – supports up to 4 IDE devices |
| SATA Connectors | 2 x SATA 1.5 Gb/s ports (supports up to 2 SATA devices) |
| USB Ports | 8 x USB 2.0 ports (4 on I/O panel, 4 via headers) |
| LAN | 10/100 Ethernet (802.3u), Wake‑On‑LAN supported |
| Audio Channels | 7.1‑channel AC’97 audio |
The board includes eight USB 2.0 ports – four on the I/O panel and four via on‑board headers.
It uses a 939‑pin socket that supports AMD Athlon™ 64, 64FX, and 64 X2 processors.
The north‑bridge is the SiS 756 chipset and the south‑bridge is the SiS 965L chipset.
Four 184‑pin DDR DIMM slots support DDR1, DDR2, DDR3, and DDR4+ modules, up to a total of 4 GB, with dual‑channel operation when identical modules are installed in matching slots.