User manual ASROCK H55 PRO

[. . . ] H55 Pro User Manual Version 1. 0 Published December 2009 Copyright©2009 ASRock INC. All rights reserved. 1 Copyright Notice: No part of this manual 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 manual 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. Disclaimer: Specifications and information contained in this manual are furnished for informational use only and subject to change without notice, and should not be constructed as a commitment by ASRock. ASRock assumes no responsibility for any errors or omissions that may appear in this manual. [. . . ] This COM1 header supports a serial port module. Serial port Header (9-pin COM1) (see p. 12 No. 30) 1 RRXD1 DDTR#1 DDSR#1 CCTS#1 RRI#1 RRTS#1 GND TTXD1 DDCD#1 HDMI_SPDIF Header (3-pin HDMI_SPDIF1) (see p. 12 No. 31) 1 GND SPDIFOUT +5V HDMI_SPDIF header, providing SPDIF audio output to HDMI VGA card, allows the system to connect HDMI Digital TV/ projector/LCD devices. Please connect the HDMI_SPDIF connector of HDMI VGA card to this header. Please connect the black end (A) of HDMI_SPDIF cable to the HDMI_SPDIF header on the motherboard. Then connect the white end (B or C) of HDMI_SPDIF cable to the HDMI_SPDIF connector of HDMI VGA card. white end (3-pin) SPDIFOUT GND blue black HDMI_SPDIF Cable (Optional) C B A A. white end (2-pin) SPDIFOUT GND blue black 31 2. 11 Smart Switches This motherboard has three smart switches: power switch, reset switch and clear CMOS switch, allowing users to quickly turn on/off or reset the system or clear the CMOS values. 22) Power Switch is a smart switch, allowing users to quickly turn on/off the system. Reset Switch is a smart switch, allowing users to quickly reset the system. Clear CMOS Switch is a smart switch, allowing users to quickly clear the CMOS values Reset Switch (RSTBTN) (see p. 12 No. 17) clr CMOS You are not allowed to use Clear CMOS switch function if you set up the system password. If you want to clear the CMOS values, please clean your system password in advance or refer to page 26 "Clear CMOS jumper" description instead. 32 2. 12 Dr. Debug is used to provide code information, which makes troubleshooting even easier. The Bootblock initialization code sets up the chipset, memory and other components before system memory is available. The following table describes the type of checkpoints that may occur during the bootblock initialization portion of the BIOS: Checkpoint Before D1 D1 Description Early chipset initialization is done. Early super I/O initialization is done including RTC and keyboard controller. Save power-on CPUID value in scratch CMOS. D0 D2 D3 Go to flat mode with 4GB limit and GA20 enabled. If memory sizing module not executed, start memory refresh and do memory sizing in Bootblock code. Bootblock code is copied from ROM to lower system memory and control is given to it. Both key sequence and OEM specific method is checked to determine if BIOS recovery is forced. The Bootblock-Runtime interface module is moved to system memory and control is given to it. Determine whether to execute serial flash. D4 D5 D6 D7 D8 D9 The Runtime module is uncompressed into memory. [. . . ] The default value is [Enabled]. 60 Boot Logo Use this option to select logo in POST screen. This option only appears when you enable the option "Full Screen Logo". Boot From Onboard LAN Use this item to enable or disable the Boot From Onboard LAN feature. Boot Up Num-Lock If this item is set to [On], it will automatically activate the Numeric Lock function after boot-up. 3 . [. . . ]