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Black rectangular USB-C switch with short attached cable and select button

LUOM

LUOM TJ-A034 Bi-Directional USB-C Switch 8K@30Hz 4K@120Hz 10Gbps 100W

SKU CH-PBWC-RHD7S

A bi-directional USB-C switch that toggles two computers to one display or one computer to two displays at 8K 30 Hz, 4K 120 Hz, 10 Gbps data and 100 W charging

  • Port count2
  • Cable length50 cm
  • Input ports1 x Type-C
  • Output ports2 x Type-C
  • Maximum supported resolutions8K@30 Hz 4K@120 Hz
  • Bandwidth ratingHigh Speed 10 Gbit/s
  • Switch between two computers on one display with bi-directional 2x1 mode
  • Connect one computer to two monitors using 1x2 splitter mode
  • Deliver up to 100W charging while transferring video and data
  • Drive 8K at 30Hz or 4K at 120Hz over DisplayPort 1.4
  • Transfer files at 10Gbps through USB 3.1 Gen 2 bandwidth

Versatile USB-C Switch for Dual-Computer Setups

The LUOM TJ-A034 is a bi-directional USB-C switch designed for users who share one monitor between two laptops or desktops. It also works as a 1x2 splitter to route a single source to either of two displays, though only one screen is active at a time. The unit supports video up to 8K at 30 Hz and 4K at 120 Hz, plus high-refresh 1440p and 1080p modes. It suits professionals and gamers who need a compact, driver-free way to toggle sources with a single button press.

Fits Between Two Hosts

The switch sits between two USB-C source devices and one USB-C monitor, requiring the host ports and the display port to support DisplayPort 1.4 Alt Mode and USB PD 3.0. A 50 cm fixed cable connects the switch to the monitor, while two separate USB 3.1 Gen 2 cables (not included) link the host ports. External power via the supplied micro-USB cable is mandatory for operation. This arrangement frees up desk space by eliminating the need for multiple docks or manual cable swapping.

Passive Cooling with 100 W Power Delivery Overhead

The aluminium-bodied switch relies on passive convection and draws negligible power for its own logic, so it adds no audible noise to the workspace. It passes through up to 100 W of USB Power Delivery to charge the connected laptop while simultaneously handling 10 Gbps data and high-resolution video. Because the device has no fan or active components beyond the switching IC, thermal output remains low during typical daily use.

How it compares

Measured against everything we stock in HDMI & AV Selector Switches, at today’s prices. Recalculated every night.

Price $39.99
Pricier than about 75% of the 1,998 comparable items (median $27.99).

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Specifications

Product
Brand nameLUOM
Product lineTJ-A034
Model nameTJ-A034
Part numberTJ-A034
Product colorBlack
Performance
Bandwidth ratingHigh Speed 10 Gbit/s
Display
Maximum supported resolutions8K@30 Hz 4K@120 Hz
Ports & slots
Port count2
Input ports1 x Type-C
Output ports2 x Type-C
Size & build
Cable length50 cm
Product dimensions12 × 6 × 0.08 in
Product weight1.2 oz
In the box
Units per package1
In the box1 x Bi-direction Switch 50 cm

Questions about this item

Does the 10 Gbps bandwidth limit how long I can run 4K@120Hz video without dropouts?

The switch is rated for 10 Gbps data transfer and supports 4K@120Hz over DisplayPort 1.4, so sustained use at that resolution stays within the specified bandwidth.

Will the unit get hot or noisy if I leave it powered and switching sources all day?

It has no fan and draws power from the supplied micro-USB cable; the aluminium shell dissipates heat passively, so it runs silent and stays cool under continuous operation.

What cables and power source do I need to have on hand before this switch will work?

You need two USB-C 3.1 Gen 2 cables for the source devices, a monitor with a USB-C port that supports video, and a USB-A power adapter for the included micro-USB power cable.

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