Compaq W4000 Compaq Evo Workstation W4000 CMT Hardware Reference Guide - Page 26

Hardware Upgrades DDR-SDRAM DIMMs For proper system operation, if your system supports DDR-SDRAM DIMMs, the DIMMs must be industry-standard 184-pin, unbuffered PC 1600 200 Mhz- or PC2100 266 Mhz-compliant DDR-SDRAM DIMMs. The DDR-SDRAM DIMMs must support CAS Latency 2 or 2.5 (CL = 2 or CL = 2.5). They must also contain the mandatory JEDEC SPD information. Also, x16 (double-sided) and x4 DIMMs are not supported. The system will not start using unsupported DIMMs. The largest memory supported is 1 GB using 512-MB memory modules. After 1 GB memory modules are available, then the largest memory supported will be 2 GB. Memory Module Installation Ä CAUTION: Your memory module sockets have gold metal contacts. When upgrading your memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other. Ä CAUTION: Static electricity can damage the electronic components of the computer or optional cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. See Appendix E, "Electrostatic Discharge," for more information. Ä CAUTION: When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module. 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock. 2. Shut down the operating system properly, then turn off the computer and any external devices, then disconnect the power cord from the power outlet. 3. Remove the access panel and locate the memory module sockets. Å WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to cool before touching. 2-8 Hardware Reference Guide