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G-Tech G-Drive Mobile USB-C Review: Your Mac’s Handy Friend

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The recently released G-Drive Mobile USB-C from G-Tech is similar to the previous model released two years ago. It’s now just slightly faster and includes two new capacities, 2TB and 4TB.

If you think the new capacities are not a novelty, you’re right. There are plenty of 2TB and 4TB portable drives on the market. However, if you have one of those Thunderbolt 3- or USB-C-only Mac computers, your options are still pretty limited.

The support for USB-C, therefore, makes the new portable drive quite a catch. With a suggested retail price of less than $150 for 4TB, it’s one of the less expensive drives that give you a huge amount of extra space you’d like for your Mac. And if capacity is not a big concern, you can get the 2TB or 1TB versions for $95 and $65, respectively.

The G-Tech G-Drive Mobile USB-C is a relatively compact portable drive.
The G-Tech G-Drive Mobile USB-C is a relatively compact portable drive.

G-Drive Mobile USB-C: Familiar design

The new G-Drive shares the same design as the previous version though slightly thinner, except the 4TB version, which is noticeably thicker. Overall, this drive is a compact rectangular box that holds a standard 2.5-inch internal hard drive on the inside.

On one side, the G-Drive has a USB-C port. Next to this port is a tiny white status light that flashes during operation. The drive has an aluminum chassis that feels sturdy and tough, though it’s not rated as a rugged drive. Like all storage devices, you’re supposed to handle it with care.

Along the sides, the drive comes in silver or space gray. On top, there’s a shiny G logo of G-Technology. In all, the whole package looks pretty nice.

Out of the box new drive includes two USB cables. One cable has USB-C connectors on both ends to use with USB-C-ready (or Thunderbolt 3-ready) computers. (By design, all Thunderbolt 3 ports can work as USB-C ports.) The other is a USB-A to USB-C cable that allows the drive to work with most existing computers with regular USB-A ports.

Hardware specifications

InterfaceUSB 3.1 Gen 1 (5Gbps) with an USB-C port
USB 2.0 compatibleYes
Capacity4TB, 2TB, 1TB
Dimensions1TB and 2TB: 4.33 x 3.23 x 0.41 in (110 x 82 x 11 mm)4TB: 4.33 x 3.23 x 0.75 in (110 x 82 x 19 mm)
Weight1TB and 2TB: 0.30 lbs (0.14 kg)
4TB: 0.51 lbs (0.23 kg)
ColorSpace Gray, Silver, Gold (2TB only)
Supported OSMacOS 10.11 or later
Windows 10, 8.1, 7 (via reformat or HFS+ driver software)
Warranty3 years
G-Drive Mobile USB-C’s hardware specifications.

G-Drive Mobile USB-C: Detail photos

G Tech 4TB G Drive Mobile USB C 1 e1540410034324

The 4TB version of the G-Tech G-Drive Mobile USB-C.

G Tech 4TB G Drive Mobile USB C 10

G Tech 4TB G Drive Mobile USB C 9

G Tech 4TB G Drive Mobile USB C 8

G Tech 4TB G Drive Mobile USB C 7

G Tech 4TB G Drive Mobile USB C 5

G Tech 4TB G Drive Mobile USB C 4

G Tech 4TB G Drive Mobile USB C 2

Mac-ready, Windows-compatible

Like the earlier model, the new G-Drive Mobile USB-C is pre-formatted in the HFS+ file system and will work with a Mac right away. If you want to make it work with a Windows computer, you have two options.

Option one is to reformat the drive into either a Windows native file system (namely NTFS) or exFAT, which will interchangeably work with Windows and Mac. To do this, you can use native formatting tools of  Windows or macOS. Alternatively, you can use G-Technology Format Wizard pre-loaded on a small separate partition of the drive itself.

The second option is to install the included Paragon HFS+ for Windows utility, enabling a Windows computer to read and write the HFS+ file system. I prefer the first option since it allows the drive to work with all Windows computers and not just one with the extra software installed.

G-Drive Mobile USB-C: Fast performance

I tested the 4TB version of the new G-Drive, rated as the slowest among the three capacities, yet it was already quite fast.

In copy tests, where I transferred a large amount of data from a host computer – which runs on an NVMe solid-state drive—onto the portable drive, it registered the sustained speeds of 119 megabytes per second for writing and more than 129 MB/s for reading. Both numbers were impressive among non-SSD portable drives.

G Tech 4TB G Drive Mobile USB C 2

Other than the fast performance, the drive also worked well even during long operations. It was quiet and stayed cool.

I did notice the tiny vibration caused by the spinning of the internal drive on the inside. Interestingly, the drive didn’t stop spinning even when there was no activity. It did share power status with the host computer, however. In other words, the G-Drive doesn’t seem to have a sleep mode, which is not a huge deal.

G-Tech G-Drive Mobile USB-C Portable Drive's Rating

7.9 out of 10
G Tech 4TB G Drive Mobile USB C 1 e1540410034324
8.5 out of 10
8 out of 10
Design and Setup
8 out of 10
7 out of 10


Fast performance, high capacities

USB-C-ready, compatible cable included

Useful software utilities


More expensive than non-USB-C portable drives

No sleep mode when idle


There’s nothing earth-shattering about the new G-Drive Mobile USB-C. But if you’re looking for a reliable portable drive with abundant storage space to use on the go with your new MacBook Pro, this is a good choice.

Also, consider the Armor A75 from Silicon Power if you want something that can take a beating. Need performance and ultra-portability? The My Passport SSD or the Samsung T5 fits the bill better.

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