MKxx55GSX Specifications

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2.5-inch Hard Disk Drives

MKxx55GSX Series

MKxx55GSX Specs

MKxx55GSX Specs:StorageSolutions/2.5-inchHardDiskDrives/MKxx55GSXSeries/MKxx55GSXSpecs

MKxx55GSX Hard Disk Drive

120 / 160 / 250 / 320 / 400 / 500GB*
2.5-Inch / 5,400 RPM / SATA

Mxx55GSX Series Data Sheet

The MKxx55GSX series of 5400 RPM, 2.5-inch hard disk drives offers up to one-half terabyte in capacity with quiet acoustics and enhanced durability, providing a solid storage solution for mobile and stationary PCs, game consoles, printers, external storage devices as well as set top boxes, personal video recorders and surveillance systems. Toshiba’s advanced servo techniques and mechanical design minimize drive acoustics, making them nearly inaudible during operation. The 300GB, 160GB and 120GB in particular, perform close to the threshold of human hearing.

Further design optimizations boost the durability of the MKxx55GSX line-up, providing industry-leading robustness against shock while the drives are in operation. An operational free-fall sensor (FFS) feature further protects the drive and user data against potential damage from shock, vibration and rough handling. The MKxx55GSX products support a 3.0 Gb/second data transfer rate and have passed testing by the Serial ATA International Organization (SATA-IO) for SATA interoperability.

MK1255GSX

MK1655GSX

MK2555GSX

MK3255GSX

MK4055GSX

MK5055GSX

Series Overview

Drive Capacity	120GB*	160GB*	250GB*	320GB*	400GB*	500GB*
Drive Interface	Serial ATA Revision 2.6 / ATA-8
Number of Platters (disks)	1	1	1	2	2	2
Number of Data Heads	1	2	2	4	4	4
Transfer Rate to Host	3 Gb/sec

Performance

	Track-to-track Seek	2ms
	Average Seek Time	12ms
	Rotational Speed	5,400 RPM
	Average Latency	5.55ms
	Buffer Size	8MB**

Power Requirements

	Voltage	5V (+/-5%)
	Spin up (start) Power	4.5 watts
	Seek Power	1.7 watts
	Read/Write Power	1.4 watts
	Active Idle Power	0.85 watts
	Low Power Idle	0.6 watts
	Standby Power	0.18 watts
	Sleep Power	0.13 watts

Physical Size

	Dimensions (W) x (H) x (D)	0.37" (9.5 mm) x 2.75" (69.85 mm) x 3.94" (100 mm)
	Weight	98 g (3.46 oz.)

Environmental

Temp - Operating	5° to 55°C (41° to 131°F)
Temp - Non-Operating	-40° to 60°C (-40° to 140°F)
Vibration - Operating	9.8 m/s² (1.0G) 5 to 500 Hz
Vibration - Non-Operating	49 m/s² (5.0G) 5 to 500 Hz	49 m/s² (5.0G) 15 to 500 Hz	49 m/s² (5.0G) 15 to 500 Hz	49 m/s² (5.0G) 15 to 500 Hz	49 m/s² (5.0G) 15 to 500 Hz	49 m/s² (5.0G) 15 to 500 Hz
Shock - Operating	3,920 m/s² (400G) 2ms
Shock - Non-Operating	8,820 m/s² (900G) 1ms
Altitude - Operating	-300 to 3,000 m

Acoustics

	Acoustics (idle)	1.9 bels	1.9 bels	1.9 bels	2.5 bels	2.5 bels	2.5 bels
	Acoustics (seek)	2.0 bels	2.0 bels	2.0 bels	2.5 bels	2.5 bels	2.5 bels

*One Gigabyte (1 GB) means 10⁹ = 1,000,000,000 bytes using powers of 10. A computer operating system, however, reports storage capacity using powers of 2 for the definition of 1 GB = 2³⁰ = 1,073,741,824 bytes, and therefore shows less storage capacity. Available storage capacity will also be less if the computer includes one or more pre-installed operating systems, pre-installed software applications, or media content. Actual formatted capacity may vary.

**Buffer space available to the user.

Subject to Change: While Toshiba has made every effort at the time of publication to ensure the accuracy of the information provided herein, product specifications, configurations, prices, system/component/options availability are all subject to change without notice.