SEKX2C1U - Sun 4GB Kit (2 X 2GB) DDR2-533MHz PC2-4200 ECC Registered CL4 240-Pin DIMM 1.8V Memory

1. Memory Type: DDR2 SDRAM
2. Memory Size: 4GB
3. Memory Speed: 533MHz
4. Memory Standard: PC2-4200
5. Error Correction Code (ECC): ECC Registered
6. CAS Latency: CL4
7. Pin Count: 240-Pin DIMM
8. Voltage: 1.8V
9. Number of Modules: 2
10. Memory Rank: Dual Rank
11. Memory Configuration: 256Meg x 72
12. Compatibility: Sun Microsystems Servers

Notes:
1. ECC registered memory provides an extra layer of data integrity and reliability.
2. Dual rank memory modules provide better performance than single rank modules.
3. Ensure compatibility with your system before purchasing.