IBM 43C6489 | 2GB DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 200-Pin SoDimm Dual Rank Memory Module

1. Memory Type: DDR2 SDRAM
2. Capacity: 2 GB
3. Memory Speed: 667 MHz
4. Form Factor: SO-DIMM 200-pin
5. Data Integrity Check: Non-ECC
6. Latency Timings: CL5
7. Rank: Dual Rank
8. Technology: Unbuffered
9. Voltage: 1.8V
10. Pin Configuration: 200 pins
11. Compatible Slots: 1 x memory - SO-DIMM 200-pin
12. Supported Memory Standards: PC2-5300

Notes:
1. This memory module is compatible with select IBM ThinkPad and Lenovo laptops.
2. DDR2 memory is slower than DDR3 and DDR4, but can still provide a significant performance boost over older memory types.
3. Dual rank memory modules provide better performance than single rank modules, especially in systems with multiple memory slots.