Dell 311-3681 | 1GB Kit (2 X 512MB) DDR2-400MHz PC2-3200 non-ECC Unbuffered CL3 240-Pin DIMM Memory for OptiPlex GX280 PC

Technical Specs:
- Memory Type: DDR2 SDRAM
- Capacity: 1GB (2 x 512MB)
- Speed: 400MHz (PC2-3200)
- Latency Timings: CL3
- Form Factor: DIMM 240-pin
- Error Correction Code: Non-ECC
- Buffered/Unbuffered: Unbuffered

Helpful Notes:
1. This memory kit is specifically designed for the Dell OptiPlex GX280 PC.
2. DDR2-400MHz is a relatively slow speed by today's standards, but it was top-of-the-line in 2004 when the GX280 was released.
3. Non-ECC memory is generally cheaper than ECC memory, but it doesn't provide the same level of data integrity.