320 GB USED DESKTOP HARD DISK

Storage Capacity:  320GB
Form Factor : 3.5 inches (standard for desktop computers)
Interface : SATA (most common), potentially SATA II (3 Gb/s) or SATA III (6 Gb/s)
Rotational Speed : 5400 RPM (common for energy efficiency) or 7200 RPM (common for performance-oriented drives)
Cache Size : 8MB, 16MB, or 32MB (larger cache can mean faster data access)
Data Transfer Rate : Can vary, but typically around 100MB/s for SATA II and up to 600MB/s for SATA III connections
Average Seek Time : Typically around 9ms for read and write operations
Power Consumption : Varies, but generally around 5-8 watts when active, less when idle
Acoustic Noise : Measured in decibels, with quieter drives typically desired for home use