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Small black rectangular adapter with one DisplayPort input and DisplayPort plus HDMI outputs on the side

LUOM

LUOM TJ-A038 DP 1.4 to DP+HDMI 2.1 Video Switch 8K 30Hz 4K 120Hz

SKU CH-99KR-W277D

A DisplayPort 1.4 switch splits one source to DisplayPort and HDMI 2.1 outputs at 8K 30Hz or 4K 120Hz

  • Port count2
  • Adapter typeDisplayPort Switch/Extender
  • Input ports1 x DisplayPort 1.4
  • Output portsDisplayPort1.4+HDMI 2.1
  • Maximum supported resolutions8K@30 Hz 4K@120 Hz
  • Bandwidth ratingHigh Speed 32.4 Gbit/s
  • Connect one source to two displays simultaneously
  • 4 Gbps bandwidth carries 8K at 30 Hz
  • 4K at 120 Hz and 1440p at 165 Hz supported
  • Works with DP 1.4, 1.3, 1.2 and 1.0 sources
  • USB power cable included for stable operation

LUOM TJ-A038 DP 1.4 Dual Video Switch

The LUOM TJ-A038 takes a single DisplayPort 1.4 source and sends identical or extended images to one DisplayPort 1.4 display and one HDMI 2.1 display simultaneously. It suits professionals driving a monitor and a projector, or gamers who want a high-refresh panel alongside a living-room TV.

Plug-and-play with mandatory USB power

Connect the included USB power cable before linking any video cables; the switch will not pass a signal without external 5 V. Use certified DP 1.4 and HDMI 2.1 cables rated for 32.4 Gbps, otherwise 8K 30 Hz or 4K 120 Hz modes may fall back to lower refresh rates. MST extended-desktop mode limits both outputs to 4K 60 Hz combined.

Check your GPU and cables before ordering

Your graphics card must support DisplayPort 1.4 MST for extended mode; SST mirror mode works on any DP 1.0–1.4 port. HDMI output does not support 1440p 165 Hz or 144 Hz — those rates are DisplayPort-only. Verify that your monitor, TV and operating system (Windows, macOS, Linux, Android, iOS) each list the target resolution and refresh rate in their specifications.

How it compares

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

Price $36.99
Pricier than about 70% of the 1,998 comparable items (median $27.99).

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Specifications

Product
Brand nameLUOM
Product lineTJ-A038
Model nameTJ-A038
Part numberTJ-A038
Product typeDisplayPort Switchers
Adapter typeDisplayPort Switch/Extender
Product colorBlack
Performance
Bandwidth ratingHigh Speed 32.4 Gbit/s
Display
Maximum supported resolutions8K@30 Hz 4K@120 Hz
Ports & slots
Port count2
Input ports1 x DisplayPort 1.4
Output portsDisplayPort1.4+HDMI 2.1
Size & build
Product dimensions12 × 6 × 0.08 in
Product weight1.2 oz
In the box
Units per package1
In the box1 X Directional DP to DP+HDMI Switcher
1 X DC 5 V power line
1 x instructions

Questions about this item

How can I verify the LUOM TJ-A038 is delivering 8K 30Hz or 4K 120Hz after I connect it?

Check the display settings on your source device to confirm the active resolution and refresh rate match 8K 30Hz or 4K 120Hz, and ensure both the DP and HDMI 2.1 cables support the required bandwidth.

What comes in the box with the LUOM TJ-A038 and what must I supply myself?

The package includes the DP 1.4 to DP+HDMI 2.1 switcher, a DC 5 V power cable, and instructions; you must provide a DisplayPort 1.4 source cable, a DisplayPort 1.4 display cable, and an HDMI 2.1 display cable.

Which LUOM TJ-A038 version or capacity should I choose for my setup?

Only one model, TJ-A038, is offered; select it if you need a single DisplayPort 1.4 input split to simultaneous DisplayPort 1.4 and HDMI 2.1 outputs supporting up to 8K 30Hz or 4K 120Hz.

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