User manual ASUS P8H77-M LE

[. . . ] Motherboard P8H77-M LE E7079 First Edition (V1) February 2012 Copyright © 2012 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. [. . . ] Connect the USB 3. 0 bracket cable to this connector, then install the USB 3. 0 bracket to the rear side of the chassis. If your chassis support customized front panel installation, with ASUS USB 3. 0 header, you can have a front panel USB 3. 0 solution. USB3_34 USB 3. 0 connector (20-1 pin USB3_34) P8H77-M LE P8H77-M LE USB3. 0 front panel connector • The USB 3. 0 module is purchased separately. • Due to Intel® limitations, the USB3_34 only supports Windows® 7 operating system. ASUS P8H77-M LE 1-29 1. 11 Onboard switches Onboard switches allow you to fine-tune performance when working on a bare or open-case system. This is ideal for overclockers and gamers who continually change settings to enhance system performance. MemOK!switch Installing DIMMs that are incompatible with the motherboard may cause system boot failure, and the DRAM_LED near the MemOK!switch until the DRAM_LED starts blinking to begin automatic memory compatibility tuning for successful boot. P8H77-M LE P8H77-M LE MemOK!switch • Refer to section 1. 12 Onboard LEDs for the exact location of the DRAM_LED. • The DRAM_LED also lights when the DIMM is not properly installed. • During the tuning process, the system loads and tests failsafe memory settings. It takes about 30 seconds for the system to test one set of failsafe settings. If the test fails, the system reboots and test the next set of failsafe settings. The blinking speed of the DRAM_LED increases, indicating different test processes. • Due to memory tuning requirement, the system automatically reboots when each timing set is tested. If the installed DIMMs still fail to boot after the whole tuning process, the DRAM_LED lights continuously. 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 5–10 seconds. • If your system fail to boot due to BIOS overclocking, press the MemOK!A message 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. 1-30 Chapter 1: Product introduction 1. 12 1. The motherboard comes with a standby power LED that lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. [. . . ] If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • • • Increase the separation between the equipment and receiver. This device must accept any interference received including interference that may cause undesired operation. Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment. IC: Canadian Compliance Statement Complies with the Canadian ICES-003 Class B specifications. [. . . ]