User manual ASUS M4A77T

[. . . ] Motherboard M4A77T E5248 First Edition V1 December 2009 Copyright © 2009 ASUSTeK Computer Inc. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK Computer Inc. Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing. ASUS PROVIDES THIS MANUAL "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, 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 USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. [. . . ] Replace the DIMMs with ones recommended in the Memory QVL (Qualified Vendors Lists) in this user manual or on the ASUS website at www. asus. com. · If you turn off the computer and replace DIMMs during the tuning process, the system continues memory tuning after turning on the computer. To stop memory tuning, turn off the computer and unplug the power cord for about 5­10 seconds. · If your system fail to boot due to BIOS overclocking, press the MemOK!A messgae will appear during POST reminding you that the BIOS has been restored to its default settings. · We recommend that you download and update to the latest BIOS version from the ASUS website at www. asus. com after using the MemOK!function. 1-18 Chapter 1: Product introduction 1. 11 1. 11. 1 Connectors Rear panel ports 1. This 25-pin port connects a parallel printer, a scanner, or other devices. This port allows Gigabit connection to a Local Area Network (LAN) through a network hub. LAN port LED indications Activity/Link LED Status OFF Description No link Linked Speed LED Status OFF Description ACT/LINK SPEED LED LED 10Mbps connection 1Gbps connection ORANGE BLINKING Data activity ORANGE GREEN 100Mbps connection LAN port 4. This port connects to the tape, CD, DVD player, or other audio sources. In the 4, 6, and 8-channel configurations, the function of this port becomes Front Speaker Out. This port connects to a microphone. Refer to the audio configuration table on the next page for the function of the audio ports in a 2, 4, 6, or 8-channel configuration. ASUS M4A77T 1-19 Audio 2, 4, 6, or 8-channel configuration Port Light Blue (Rear panel) Lime (Rear panel) Pink (Rear panel) Lime (Front panel) Headset 2-channel Line In Line Out Mic In ­ 4-channel Rear Speaker Out Front Speaker Out Mic In ­ 6-channel Rear Speaker Out Front Speaker Out Bass/Center ­ 8-channel Rear Speaker Out Front Speaker Out Bass/Center Side Speaker Out To configure an 8-channel audio output: Use the chassis with HD audio module in the front panel to support 8-channel audio output. 7. These two 4-pin Universal Serial Bus (USB) ports are for USB 2. 0 devices. These two 4-pin Universal Serial Bus (USB) ports are for USB 2. 0 devices. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2. 0 devices. 1. 11. 2 1. Internal connectors Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector. CPU and chassis fan connectors (4-pin CPU_FAN, and 3-pin CHA_FAN) DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. Only the 4-pin CPU fan supports the ASUS Q-Fan feature. 1-20 Chapter 1: Product introduction 2. These connectors are for an ATX power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) · We recommend that you use an ATX 12V Specification 2. 0-compliant power supply unit (PSU) with a minimum of 300W power rating. · If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin power plug can provide at least 15 A on +12 V and that the PSU has a minimum power rating of 300W. The system may become unstable or may not boot up if the power is inadequate. [. . . ] Confirm the password when prompted. The message "Password Installed" appears after you set your password successfully. To change the user password, follow the same steps as in setting a user password. Clear User Password Select this item to clear the user password. Password Check [Setup] When this item is set to [Setup], BIOS checks for user password when accessing the Setup utility. When this item is set to [Always], BIOS checks for user password both when accessing Setup and booting the system. Configuration options: [Setup] [Always] 2. 7 The Tools menu items allow you to configure options for special functions. [. . . ]