Seagate U-series 40GB HDD 40GB Ultra-ATA/100 internal hard drive

40GB HDD, ULTRA ATA/100, 5400rpm, 1MB Cache On drives less than 33.8GB, Limit Capacity jumper sets the default cylinder translation to 4092 to solve issues with certain BIOS that only auto-detect. Total available sectors are still at full capacity
as reported via Identify Drive data words 52 - 61. On drives greater than 33.8GB, Limit Capacity jumper changes total available sectors as reported via Identify Drive data words 60-61 to 33.8GB. The ATA Set Features F1 sub-command will cause Identify Data words 60-61 to report the true full capacity. Third party partitioning software may be needed to achieve full capacity when using this option jumper.