4100 MT (250-5160) Adding Memory Faxback Doc. # 2775 Warning: This CPU does not support 8 MB SIMMS. This CPU does not support double sided SIMMS. NOTE: The 32 bit SIMMS for this CPU are available through Third Party Products. The 4 MB (1x32) SIMM Kit can be ordered under Catalog #. 250-5138. APPROVED VENDOR LIST FOR 1 MB SIMM (AST P/N 104000-190, Description 256K x 32 70ns F/PM 72 POS TIN) Vendor Vendor P/N Vendor Vendor P/N Fujitsu MB85331-70PJPB Fujitsu MB85331-70PS Hyundai HYM532256AM-70XSM Hyundai HYM532256M-70G Micron MT8D25632M-7 Micron MT8D25632G-7 PNY 3225670 PNY 3225670-8G Samsung KMM532256CV-7 Samsung KMM532256CVG-7 Sunland 27100-70 Toshiba THM322500AS-70 APPROVED VENDOR LIST FOR 4 MB SIMM (AST P/N 104000-189, Description 1M x 32 70ns F/PM 72 POS TIN) Vendor Vendor P/N Vendor Vendor P/N Fujitsu MB85341A-70PS Goldstar GMM7321000BSG-70 Goldstar GMM7321000S-70 Hitachi HB56A132SBV-7B Hitachi HB56D132SBR-7A Hyundai HYM532100AM-70 IBM IBM11D1320BA-70 Micron MT8D132M-7 NEC MC-421000A32B-70 Oki MSC23132-70DS8 Samsung KMM5321000BV-7 Samsung KMM5321000BVG-7 Smart SM5321000-7 TI TM124BBK32S-70 Toshiba THM321000AS-70 APPROVED VENDOR LIST FOR 16 MB SIMM (AST P/N 104000-186, Description 4M x 32 70ns F/PM 72 POS TIN) Vendor Vendor P/N Vendor Vendor P/N Samsung KMM5324100V-7 Samsung KMM5324100VG-7 Toshiba THM324000S-70 Toshiba THM324000SG-70 To add system memory, follow these steps: 1. Turn the computer off, unplug the power and phone cords, disconnect all peripheral devices, remove the system-unit-cover, and move the internal drive bay. 2. For better access to the SIMM sockets, remove the power supply: Use a Phillips screwdriver to remove the four power supply screws on the back of the computer. Pull the power supply out and place it next to the chassis. Note: To prevent the power supply from dropping onto the system board, hold it with one hand while removing the screws. 3. Select the sockets into which you will insert the SIMMs. Fill sockets in sequence; for instance, fill socket 0 before socket 1. Total Memory Socket 0 Socket 1 Socket 2 Socket 3 1 MB 1-MB Empty Empty Empty 2 MB 1-MB 1-MB Empty Empty 3 MB 1-MB 1-MB 1-MB Empty 4 MB 1-MB 1-MB 1-MB 1-MB 4 MB 4-MB Empty Empty Empty 5 MB 4-MB 1-MB Empty Empty 6 MB 4-MB 1-MB 1-MB Empty 7 MB 4-MB 1-MB 1-MB 1-MB 8 MB 4-MB 4-MB Empty Empty 9 MB 4-MB 4-MB 1-MB Empty 10 MB 4-MB 4-MB 1-MB 1-MB 12 MB 4-MB 4-MB 4-MB Empty 13 MB 4-MB 4-MB 4-MB 1-MB 16 MB 4-MB 4-MB 4-MB 4-MB 16 MB 16-MB Empty Empty Empty 17 MB 16-MB 1-MB Empty Empty 18 MB 16-MB 1-MB 1-MB Empty 19 MB 16-MB 1-MB 1-MB 1-MB 20 MB 16-MB 4-MB Empty Empty - Not Supported 21 MB 16-MB 4-MB 1-MB Empty 22 MB 16-MB 4-MB 1-MB 1-MB 24 MB 16-MB 4-MB 4-MB Empty 25 MB 16-MB 4-MB 4-MB 1-MB 28 MB 16-MB 4-MB 4-MB 4-MB 32 MB 16-MB 16-MB Empty Empty 33 MB 16-MB 16-MB 1-MB Empty 34 MB 16-MB 16-MB 1-MB 1-MB 36 MB 16-MB 16-MB 4-MB Empty 37 MB 16-MB 16-MB 4-MB 1-MB 40 MB 16-MB 16-MB 4-MB 4-MB - Not Supported 48 MB 16-MB 16-MB 16-MB Empty 49 MB 16-MB 16-MB 16-MB 1-MB 52 MB 16-MB 16-MB 16-MB 4-MB 64 MB 16-MB 16-MB 16-MB 16-MB Note: Use only memory upgrade kits from your Radio Shack store or participating dealer. Only 70-ns or faster, 32-bit SIMMs should be used. Other memory upgrades might not work correctly in your computer. 4. Remove SIMMs if necessary. You cannot remove a SIMM without first removing any SIMMs located below it. To remove a SIMM, carefully pull the plastic retaining clips sideways and push the SIMM down slightly. Pull the SIMM out of the socket; be careful to avoid damage. 5. When installing SIMMs, insert the SIMM in the highest empty socket first. Carefully push the SIMM into the socket until it is fully seated. The easiest method may be to push in the right side of the SIMM first and then the left side. Push the SIMM back until it snaps into place. Install as many SIMMs as you need to match the configuration in the table. 6. Replace the power supply, internal drive bay, and system-unit cover. Reconnect peripheral devices and plug in the power and phone cords. When you start the computer, it will automatically recognize the change in memory configuration. (ALL/-01/10/95)