Crucial CT2KIT6464AA53E | 1GB Kit (2 X 512MB) DDR2-533MHz PC2-4200 non-ECC Unbuffered CL4 240-Pin DIMM Memory

Technical Specs:
- Capacity: 1GB Kit (2 x 512MB)
- Memory Type: DDR2 SDRAM
- Memory Speed: 533MHz (PC2-4200)
- CAS Latency: CL4
- Technology: Non-ECC Unbuffered DIMM
- Pin Count: 240-pin
- Voltage: 1.8V

Helpful Notes:
- DDR2-533MHz is a relatively slow memory speed compared to modern standards, but may still be useful for older computers or specific applications.
- Non-ECC Unbuffered DIMMs are generally less expensive than ECC or Registered DIMMs, but offer less error correction and reliability.
- This kit includes two 512MB modules, which allows for dual-channel memory configurations on compatible motherboards, potentially improving performance.