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500GB Travelstar™ Z7K500 Hard Disk Drive

2.5-Inch | SATA 3.0Gb/s | 7200RPM | 32MB Cache
High-performance, single-disk 500GB HDD for mobile applications
Travelstar™ Z7K500 is the second generation 7mm, 7200 RPM 2.5-inch hard drive from HGST, with capacities ranging from 250GB to 500GB leveraging advanced Format, which increases the physical sector size from 512 bytes to 4,096 (4K) bytes to improve drive capacities and error correction capabilities. Travelstar Z7K500 is the first 2.5-inch HDD with a 6Gb/s SATA interface (with OWC 3Gb/s enabled firmware) and 32MB of cache and delivers the highest 7200 RPM performance in PCMark vantage testing. The 500GB per platter, one-disk models are designed as a direct replacement for standard 9.5mm hdds, for use in notebook PCs, external storage and gaming consoles, as well as new, thinner and more robust device designs. The Z7K500 carries the EcoTrac classification due to its low-power consumption and eco-friendly, halogen-free production. Travelstar Z7K500 balances speed, power-efficiency and design flexibility to meet the needs of mobile applications.

500GB HGST Travelstar™ Z7K500 Specifications:


Form Factor
2.5″ HDD
SATA 6.0Gb/s (3Gb/s firmware enabled4)
Formatted Capacity2
Rotational Speed
7,200 RPM
Cache / Data Buffer
Manufacturer Model Number


Height (max)
7mm (0.275″)
Width (max)
69.85mm (2.750″)
Length (max)
100.35mm (3.951″)
Weight (typical)
95g (0.209 lbs.)
Bytes per Sector
Areal Density


Contact Start-Stops
3 Year HGST Warranty (for replacement with standard 6Gb/s firmware)
3 Year OWC Warranty (for replacement with 3Gb/s firmware enabled)


Transfer Rate (Max)
Track-to-track Seek
Average Seek Time
Average Latency


Maximum Start Current, DC
5.5 Watts
Seek Power
2.1 Watts
Read Power
1.8 Watts
Write Power
1.8 Watts
Idle Mode
1.7 Watts
Idle Mode, Active
1.0 Watts
Idle Mode, Low Power
0.8 Watts
Standby Mode
0.2 Watts
Sleep Mode
0.1 Watts

Environmental (Operating)

400 G max at 2ms
Ambient Temperature (°F)
32°F to 140°F
Ambient Temperature (°C)
0°C to 60°C
-304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

Environmental (Non-Operating)

1000 G max at 1ms
Ambient Temperature (°F)
-40°F to 149°F
Ambient Temperature (°C)
-40°C to 65°C
-304.8 m to 12,192 m (-1000 ft to 40,000+ ft)


Idle (Typical)
2.3 bels
Seek (Typical)
2.4 bels
  1. 1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.
  2. In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
  3. Specific application environments such as temperature and duty cycle will affect the overall reliability rates.
  4. OWC 3Gb/s firmware enabled for downclocked use in 3Gb/s systems.
Manufacturer provided specifications for HGST p/n 0J12281 UPC#: 829686002173

Customer Ratings

Write a Review 5 / 5 3 out of 3 (100%) reviewers would recommend this product
Verified Buyer Top 250 Contributor
Reviewer: KazWolf Location: On a Mountain in N.A. Taiga Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Nice Little Drive February 3, 2017 Using as replacement HDD in a Toshiba notebook computer. Drive fit perfectly, was immediately recognized, runs quietly, scanned clean of any bad sectors and has been running 24/7 since being installed without errors or problems of any kind. - No cons at this time.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Anonymous Location: 66604 Age: 55-65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Wonderful Drive April 6, 2015 I rehabilitated my dead Mac Mini 2.0 from mid '07, with this drive, a new Superdrive, and 2-2 gb RAM cards. I now have a real flyer, at a small fraction of what a new one would cost.

So happy I discovered OWC, and plan to get an external USB Blue ray from them next month.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: New Orleans, LA Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Breathed new life into an '08 MacBook April 30, 2014 This HDD is installed in a late 2008 MacBook with 8Gig RAM and Maverick OS X. Replacing the HDD was a snap, I time machined the OEM 250Gig HDD, swapped out the HDD with the new HDD, booted from the Time Machine external disk and reloaded. I haven't run any official test on the HDD speed or performance but I do use Photoshop CS3 regularly and I have nearly 15,000 emails and I could swear my PC runs better with the new HDD which may be because it is a faster RPM drive and there's much more temporary space for the OS. This small investment has allowed me to keep on using my MacBook for some time.

I would recommend this item to a friend!

HGST 500GB Travelstar™ Z7K500 Mfr P/N: 0J12281 OWC SKU: HIT0J26005S2 Internal 2.5" Hard Drive HGST & OWC Fulfilled 3 Year Limited Warranty
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