Compaq 201066-B21 | 40 GB 3.5 Internal Hard Drive 1 Pack IDE Ultra ATA/100 (ATA-6) 7200 RPM 128 KB Buffer

Technical Specifications:
- Interface: IDE Ultra ATA/100 (ATA-6)
- Capacity: 40 GB
- Form Factor: 3.5 inch
- Buffer Size: 128 KB
- Rotational Speed: 7200 rpm
- Average Latency: 4.17 ms
- Data Transfer Rate: 100 MBps
- Seek Time: 8.5 ms (average)
- Track-to-Track Seek Time: 0.8 ms (average)
- Full-Stroke Seek Time: 21 ms (average)
- Operating Temperature: 0°C to 60°C
- Non-Operating Temperature: -40°C to 70°C

Helpful Notes:
- This hard drive is compatible with Compaq Evo and Presario desktop computers.
- The 128 KB buffer size helps to improve performance and reduce wear on the drive.
- The 7200 rpm rotational speed allows for faster data access and transfer rates.