User manual ACER A191HQ

[. . . ] Record the model number, serial number, purchase date, and place of purchase information in the space provided below. The serial number and model number are recorded on the label affixed to your computer. All correspondense concerning your unit should include the serial number, model number, and purchase information. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopy, recording, or otherwise, without the prior written permission of Acer Incorporated. Model Number : _________________________________ Serial Number: ___________________________________ Purchase Date: ___________________________________ Place of Purchase: ________________________________ Acer and the Acer Logo are registered trademarks of Acer Inc. [. . . ] This independence allows you to install DDR DIMMs with different capacities to form different configurations. Note: The DDR DIMM has only one notch located on the center of the module. Removing a DDR DIMM Before you can install a new DIMM in a socket, remove first any previously installed DIMM from that socket. See page 35 for more detailed instructions. Locate the DDR DIMM socket on the mainboard. 51 3 Press the holding clips on both sides of the socket outward to release the DDR DIMM (1). Gently pull the DDR DIMM out of the socket (2). Note: Place your forefingers on the top of the DIMM before pressing the holding clips to gently disengage the DIMM from the socket. Installing a DDR DIMM Note: The DDR DIMMs must be installed in the following order: DIMM1, DIMM2, DIMM3 and DIMM4. Refer to the "Mainboard layout" on page 14 for the location of the DIMM. 1 Locate the DDR DIMM socket on the mainboard. 52 3 Upgrading your system 2 Align the DDR DIMM with the socket (1). Press the holding clips inward to lock the DDR DIMM in place (2). Note: The DDR DIMM socket is slotted to ensure proper installation. If you insert a DDR DIMM but it does not fit easily into the socket, you may have inserted it incorrectly. Reverse the orientation of the DDR DIMM. Reconfiguring the system memory The system automatically detects the amount of memory installed. Run the BIOS Setup utility to view the new value for total system memory and make a note of it. Refer to "4 BIOS Setup utility" on page 53 for more information. 4 BIOS Setup utility This chapter gives information about the system BIOS and discusses how to configure the system by changing the settings of the BIOS parameters. 55 BIOS Setup utility The BIOS Setup utility is a hardware configuration program built into your system's Basic Input/Output System (BIOS). Since most systems are already properly configured and optimized, there is no need to run this utility. Total amount of second-level cache memory that comes with the CPU. The available cache sizes are 256 and 512 KB. Current system settings for floppy disk drive A. Indicates a hard disk type. Level 1 Cache Level 2 Cache Diskette Drive A IDE Hard Disk Drive 0 IDE Hard Disk Drive 1 IDE Hard Disk Drive 2 59 Parameter IDE Hard Disk Drive 3 Total Memory Description Indicates a hard disk type. The memory size is automatically detected by BIOS during the POST. If you install additional memory, the system automatically adjusts this parameter to display the new memory size. 60 4 BIOS Setup utility Product Information Product Information menu displays the general data about the system, such as the product name, BIOS version, mainboard ID, serial number, etc. These information are necessary for troubleshooting and may be required when asking for technical support. These entries are for your reference only and are not user-configurable. The screen below shows the Product Information parameters: Parameter System Product Name System Serial Number Baseboard ID Baseboard Serial No BIOS Date BIOS Version SMBIOS Version Description Official name of the system. SMBIOS (System Management BIOS) allows you to check your system's hardware without actually opening it up. Hardware checking is done via software checkpoints during start up. 61 Devices and I/O Ports Devices and I/O Ports allows you to configure the onboard communication ports and the onboard devices. [. . . ] This main disconnect must be readily accessible, and it must be labeled as controlling power to the entire unit, not just to the system(s). · Earth ground the rack installation To avoid the potential for an electrical shock hazard, the rack assembly itself must be suitably earth grounded, according to your local regional electrical codes. This typically will require the rack to have its own separate earth ground. We recommend you consult your local approved electrician. 106 Appendix B: Altos R300 Rack installation guide · Elevated Operating Ambient Temperature The maximum operating temperature of the system is 35 °C (95°F). [. . . ]