438544-001 - Compaq 256MB DDR2-400MHz PC2-3200 non-ECC Unbuffered CL3 200-Pin SoDimm Memory Module for 500 Notebook PC

Technical Specs:
- Memory Type: DDR2 SDRAM
- Memory Size: 256MB
- Memory Speed: 400MHz
- Memory Standard: PC2-3200
- CAS Latency: CL3
- Pin Count: 200
- Form Factor: SoDimm
- Error Correction: Non-ECC
- Buffered/Unbuffered: Unbuffered

Helpful Notes:
1. This memory module is compatible with the Compaq 500 Notebook PC.
2. DDR2 memory is not compatible with DDR or DDR3 memory slots.
3. Non-ECC memory is typically used in consumer-grade computers, while ECC memory is used in servers and workstations for error correction.