Hard Disk 250G Internal Pc (Original Used)

Brand: WD
Capacity: 160/250/320/500GB (user)
Interface: SATA 3-6Gb/s
Dimensions: 2.5 inches
RPM rating: 5400-7200
Cache: 8-16 MB
Size: 100X70X9.5mm(7mm)

On a 1GB = 1024MB computer, the hard drive manufacturer usually converts it by 1GB = 1000MB. Take a 120GB hard disk as an example:
Vendor capacity calculation method: 120GB = 120,000MB = 120,000,000KB = 120,000,000,000 bytes
Convert to operating system. Calculation method: 120,000,000,000 bytes / 1024 = 117,187,500KB / 1024 = 114,440.9 MB = 111.8 GB.