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G-Technology 5TB G-DRIVE Mobile USB-C (USB 3.1 Gen 1) Portable External Hard Drive, Space Gray - 0G10477-1
Western Digital

G-Technology 5TB G-DRIVE Mobile USB-C (USB 3.1 Gen 1) Portable External Hard Drive, Space Gray - 0G10477-1

Bottom line: The G-Technology 5TB G-DRIVE Mobile USB-C Portable External Hard Drive: 5TB in a bus-powered pocket drive, no wall adapter needed; main trade-off: spinning platter drive, so far slower than a portable SSD.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 5TB in a bus-powered pocket drive, no wall adapter needed
  • ✓ Machined aluminum shell, not the usual plastic portable case
  • ✓ Single USB-C cable carries both power and data
  • ✓ Works with USB 3.0 and Thunderbolt 3 ports, not USB-C only

Cons

  • ✗ Spinning platter drive, so far slower than a portable SSD
  • ✗ 140MB/s read spec applies to the 1TB/2TB models, not 5TB
  • ✗ Mac-formatted out of the box; Windows users must reformat
  • ✗ Moving parts make it more drop-sensitive than flash storage

Manufacturer description

The G-Technology G-DRIVE Mobile USB-C from Western Digital packs 5TB of portable storage into a machined aluminum enclosure built to sit next to a MacBook without looking out of place. Plug-and-play USB-C handles both power and data over a single cable, and the drive stays compatible with USB 3.0 and Thunderbolt 3 ports, so older machines and newer docks both work. Western Digital rates read speeds up to 140MB/s on the 1TB and 2TB models, which is typical of a 5,400-class portable platter drive rather than an SSD. It ships Mac-ready out of the box and reformats for Windows in a few minutes…

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SpecPicks Verdict

SpecPicks scored G-Technology 5TB G-DRIVE Mobile USB-C Portable External Hard Drive using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Western Digital's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does the G-DRIVE Mobile USB-C work with Windows?

Yes. It ships Mac-ready but is easily reformatted for Windows using Disk Management or Disk Utility. Reformatting erases the drive, so do it before copying files over.

How fast is this drive?

Western Digital rates read speeds up to 140MB/s, and that figure is specified for the 1TB and 2TB capacities. It is a portable hard drive, not an SSD, so expect hard-drive-class throughput rather than flash speeds.

Do I need a Thunderbolt 3 port to use it?

No. The drive has a USB-C port and is listed as USB 3.0 and Thunderbolt 3 compatible, so it connects to standard USB ports as well as Thunderbolt 3 machines.

Will I actually get the full 5TB of usable space?

Not quite. Western Digital counts one terabyte as one trillion bytes, and states that total accessible capacity varies depending on operating environment, so the formatted figure your OS reports will be lower.

Key Features

  • Stylish, aluminum design
  • With capacities up to 5TB capacity of portable storage (total accessible capacity varies depending on operating environment.)
  • Usb-c ready; USB 3.0 and Thunderbolt 3 compatible
  • Mac ready; easily reformatted for Windows

Full Specifications

BrandWD
ColorSpace Gray
Model NameG-DRIVE Mobile
Read Speed140 Megabytes Per Second
Form FactorPortable
Media Speed140 MB/s
ConnectivityUSB-C
Model Number0G10477
CompatibilityMac
Built-In MediaUSB-C cable
Hard-Drive Size5 TB
Mfr Part Number0G10477
Number of Items1
Special FeaturePortable
Hardware PlatformMac, PC
Installation TypeExternal Hard Drive
Compatible DevicesDesktop
Data Transfer Rate140 Megabits Per Second
Enclosure MaterialAluminum
Additional FeaturesPortable

Ready to buy?

G-Technology 5TB G-DRIVE Mobile USB-C (USB 3.1 Gen 1) Portable External Hard Drive, Space Gray - 0G10477-1 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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G-Technology 5TB G-DRIVE Mobile USB-C (USB 3.1 Gen 1) Portable External Hard Drive, Space Gray - 0G10477-1
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