Dell A17547084 | 1GB PC2-6400 DDR2-800MHz non-ECC Unbuffered CL6 200-Pin SoDimm Dual Rank Memory Module for Inspiron 1721

Technical Specs:
- Memory Type: DDR2 SDRAM
- Capacity: 1GB
- Speed: 800MHz
- Form Factor: SO-DIMM 200-pin
- Data Integrity Check: Non-ECC
- Latency Timings: CL6
- Rank: Dual Rank

Helpful Notes:
1. This memory module is compatible with the Dell Inspiron 1721 laptop.
2. Non-ECC memory is faster than ECC memory, but does not have error-checking capabilities.
3. Upgrading your laptop's memory can improve its performance and multitasking capabilities.