Dell - Dell Dimension E521 System Board
- ...: Architecture: DDR SDRAM. Memory connectors: two. Memory capacities: 128-, 256-, 512-MB, and 1-GB non-ECC DDR SDRAM. Minimum memory: 256 MB. Maximum memory: 2 GB. Memory type: 333-MHz DDR SDRAM (non-ECC). NOTE: DDR 333 memory performs at 266 MHz on 400 front- side bus processors..
- Drives: Externally accessible: one slimline optical bay. one slimline 3.5-inch bay. Internally accessible: one bay for 1-inch high IDE hard drive..