Razer Thunderbolt 4 Dock Review: A simple and highly efficient USB-C hub / docking station

Design & ergonomics

The Razer Thunderbolt 4 Dock is a MacBook-style aluminum cushion. It measures 19 cm wide and 7.4 cm deep for a thickness of 2.7 cm. It is accompanied by a 135 W charger with more contained dimensions (23 x 6.8 x 1.3 cm). An 80 cm white Thunderbolt 4 standard cable connects the docking station to a computer.

Razer Thunderbolt 4 135w usb-c charger dock

The 135W charger is a bit more compact than the dock.

The house made entirely of aluminum is very nice. The Thunderbolt 4 port in USB-C format on the front panel allows you to connect a PC. There is also the card reader and a mini-jack for headphones. One Kensington port covers the left side of the case, while the rest of the connections are located on the back (three USB ports, three Thunderbolt ports, one Ethernet port, and the power plug).

dock razer thunderbolt 4 usb-c 4.0 hub docking station framework laptop

The shade of the Razer Thunderbolt 4 Dock fits perfectly with the Framework Laptop.

The standards supported by the Thunderbolt 4 docking station are at the forefront of current connectivity options. The three USB-A ports are thus compatible with the USB 3.2 Gen2 standard (ie 10 Gb / s) and the SD card reader with the UHS-II standard (312 MB / s). Flat to the Ethernet port that “only” reaches Gigabit. Finally, the four Thunderbolt 4 ports in USB-C format theoretically collect 40 Gb / s. Note that all USB-C ports are compatible with charging up to 100 W.

razer thunderbolt 4 dock usb-c docking station

The front page goes to the essentials.

As for monitors, the Thunderbolt 3 and 4 standards can “only” support two 4K monitors at 60 Hz or an 8K monitor at 30 Hz. Apple M1 owners beware, you can only extend the screen to a single external monitor. To overcome this limitation, you need to equip yourself with a DisplayLink compliant hub.

We would also like Razer to have integrated Full-size DisplayPort ports, which are more common than USB-C / DisplayPort cables. Another major absence, the HDMI interface is simply absent.

Razer RJ45 USB-C thunderbolt 4 docking station

We would have liked an effort for the unification of the ports.

The passage under our thermal camera does not reveal any abnormal heating of the docking station. The surface does not exceed 33 ° C, even after a working day and different and varied loads.

thermal camera razer thunderbolt 4 dock usb-c docking station

No overheating to report.

Editor's rating: 5 out of 5


To test the Razer Thunderbolt 4 Dock, we connected it to two 4K monitors, a Crucial X8 external SSD, a dongle Logitech Unify, an Ethernet cable and an SD card up to 300 MB / s.

USB-C Speed ​​Thunderbolt 4 Razer Docking Station

Speeds achieved at the various ports in the Razer Thunderbolt Dock 4.

The three USB 3.2 Gen2 (10 Gb / s) ports allow our external SSD to reach average speeds of 980 MB / s in read and write, which is very close to the theoretical speeds. As for the Thunderbolt ports, this time we reached 1002 MB / s. In fact, we could not saturate these ports, so it was our external SSD that happened to be the limiting factor. Normally, Thunderbolt 4 ports should allow a theoretical maximum of 2750 MB / s.

The gigabit port is slightly below what the interface offers. We measured 816 Mb / s (102 MB / s) on average during a data transfer.
The UHS-II standard SD card reader allowed us to reach an average of 243 MB / s in read and write, speeds again slightly down as our SD card is capable of reaching 300 MB / s read and write.

The connection in DisplayPort to two monitors with a definition of 3840 x 2160 pixels at 60 Hz did not pose a problem and allows you to work calmly on multi-monitor.


  • Sober design.

  • Significant flows.

  • UHS-II card reader.

Weak points

  • No HDMI connector.

  • No full-frame DisplayPort.

  • RJ45 connector “only” to the Gigabit standard.


5 stars by LesNumériques.com
Global brand

Editor's rating: 5 out of 5

How does grading work?

The Razer Thunderbolt 4 Dock delivers serious speeds across all built-in interfaces. However, Razer is fearful on the network port limited to the Gigabit standard, while the 2.5G standard is starting to become more popular on carrier boxes. In addition, the absence of full-frame HDMI and DisplayPort ports requires conversion cables.


  • Design & ergonomics

    Editor's rating: 5 out of 5

  • Performance

    Editor's rating: 5 out of 5

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