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Travelstar 4K120 hard disk drives specifications

Travelstar 4K120 models Capacity (GB) RPM Interface HTS421212H9AT00 120 4200 Parallel-ATA HTS421210H9AT00 100 4200 Parallel-ATA HTS421280H9AT00 80 4200 Parallel-ATA HTS421260H9AT00 60 4200 Parallel-ATA HTS421240H9AT00 40 4200 Parallel-ATA     Configuration PATA     Interface ATA-7 Capacity (GB)1 120 / 100 / 80 // 60 / 40 Sector size (Bytes) 512 Recording zones 24 Data heads (physical) 4 / 4 / 3 // 2 / 2 Data disks 2 / 2 / 2 // 1 / 1 Max. areal density (Gbits/sq. inch) 98     Performance   Data buffer (MB)2 8 // 2 Rotational speed (RPM) 4200 Latency average (ms) 7.1 Media transfer rate (Mbits/sec, max) 380 Interface transfer rate (MB/sec, max) 100 Ultra DMA mode-5   16.6 PIO mode-4 Seek time (read, typical)   Average (ms) 11 Track to track (ms) 1.0 R / 1.1 W Full stroke (ms) 20 R / 21 W     Reliability   Load/Unload cycle 600,000     Power   Requirement +5VDC (+-5%) Dissipation (Typical)   Startup (peak, max.) 4.5W Seek 1.7W Read (avg.) 1.4W Write (avg.) 1.4W Performance idle (avg.) 1.25W Active idle (avg.) 0.65W Low power idle (avg.) 0.45W Standby (avg.) 0.15W Sleep 0.1W     Physical size   Height (mm) 9.5 Width (mm) 70 Depth (mm) 100 Weight - max (g) 99 // 95     Environmental characteristics   Operating   Ambient temperature 5° to 55° C Shock (half sine wave) 300 G / 2ms     Non-operating   Ambient temperature -40° to 65° C Shock (half sine wave) 1000 G / 1 ms     Acoustics (A-Weighted Sound Power (Bels))   Idle (typ.) 2.3 // 2.0 Op (typ.) 2.7 // 2.4 RoHS compliant3 yes

¹ GB equals one billion bytes when referring to hard drive capacity; accessible capacity may be less.

² Upper 428KB reserved for firmware.

³ RoHS refers to the European Union Directive 2002/95/EC on the restriction of certain hazardous substances in electrical and electronic equipment.