Sun SESY2B1U | 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory for SPARC Enterprise T5120/T5220

1. Memory Type: DDR2 SDRAM
2. Memory Speed: 667 MHz
3. Memory Size: 4 GB (2 x 2 GB)
4. Memory Technology: Fully Buffered DIMM (FB-DIMM)
5. Error Correction Code (ECC): Yes
6. CAS Latency: CL5
7. Pin Count: 240-pin
8. Rank: Dual Rank
9. Voltage: 1.8V
10. Form Factor: DIMM
11. Compatible Devices: SPARC Enterprise T5120/T5220
12. Memory Configuration: 256M x 72

Helpful Notes:
1. This memory kit is specifically designed for use with Sun SPARC Enterprise T5120/T5220 servers.
2. ECC memory is essential for ensuring data integrity and preventing system crashes.
3. Dual rank memory provides better performance than single rank memory by allowing for more simultaneous data access.