KVR800D2D4P6/4G - Kingston 4GB DDR2-800MHz PC2-6400 ECC Registered CL6 240-Pin DIMM Dual Rank x4 Memory Module

1. Memory Type: DDR2 SDRAM
2. Memory Size: 4 GB
3. Memory Speed: 800 MHz
4. Memory Standard: PC2-6400
5. Error Correction Code (ECC): ECC Registered
6. CAS Latency: CL6
7. Pin Count: 240
8. Data Integrity Check: ECC
9. Number of Pins: 240-pin DIMM
10. Rank: Dual Rank x4
11. Voltage: 1.8V
12. Form Factor: DIMM

Helpful notes:
1. ECC memory is designed to detect and correct single-bit errors, making it more reliable than non-ECC memory.
2. Dual Rank memory modules provide better performance than Single Rank modules.
3. Make sure your motherboard supports DDR2 memory before purchasing this module.