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Small black rectangular box with a DisplayPort input and HDMI plus DisplayPort outputs

ESTONE

ESTONE TJ-A038 DisplayPort 1.4 MST video switch 2 port HDMI 2.1 DP 8K@30Hz 4K@120Hz

SKU CH-GTEK-5JV55

Splits a single DisplayPort 1.4 source to one HDMI 2.1 and one DisplayPort 1.4 display at up to 8K@30Hz or 4K@120Hz

  • TypeDisplayPort Switchers
  • Changer TypeDisplayPort Switch/Extender
  • ColorBlack
  • Ports2
  • SpecificationsCompatible with all DisplayPort input and HDMI, DisplayPort
  • Input Connector1 x DisplayPort 1.4
  • Drives two monitors from one DisplayPort 1.4 output with MST extended mode
  • Delivers 8K at 30 Hz or 4K at 120 Hz through HDMI 2.1 and DisplayPort 1.4
  • Handles 32.4 Gbps bandwidth for high-refresh 1440p up to 165 Hz and 1080p up to 240 Hz
  • Works with Windows MST, macOS and Android in mirror or extended desktop configurations
  • Compact 12 x 6 x 0.08 inch hub powered by included USB 5 V cable

Dual-Port MST Hub for Creative Workflows

The ESTONE TJ-A038 splits a single DisplayPort 1.4 source into simultaneous HDMI 2.1 and DisplayPort 1.4 outputs using Multi-Stream Transport. It drives two monitors at once in extended or mirrored modes, making it practical for digital-signage installs, conference rooms or multi-monitor creative setups that need 8K at 30 Hz or 4K at 120 Hz from one GPU port.

Windows MST Systems Only

The hub requires a DisplayPort 1.4 output with MST support on the host graphics card, which limits practical use to Windows PCs; macOS does not support MST extended desktops. Buyers wanting plug-and-play dual monitors on a Mac, or anyone needing more than two displays, should look at a different solution. An external 5 V USB power connection is also mandatory for operation.

Bundled Power Cable Enables Stable Operation

A dedicated DC 5 V USB power lead is included, removing the need to source a separate adapter and ensuring the hub maintains full 32.4 Gbps bandwidth for high-refresh 1440p or 4K signals. The printed instructions walk through the SST mirror and MST extended mode selection so installers can configure the two-output topology without trial and error.

Highlights

  • Drives two monitors from one DisplayPort 1.4 output with MST extended mode
  • Delivers 8K at 30 Hz or 4K at 120 Hz through HDMI 2.1 and DisplayPort 1.4
  • Handles 32.4 Gbps bandwidth for high-refresh 1440p up to 165 Hz and 1080p up to 240 Hz
  • Works with Windows MST, macOS and Android in mirror or extended desktop configurations
  • Compact 12 x 6 x 0.08 inch hub powered by included USB 5 V cable

Specifications

BrandESTONE
SeriesTJ-A038
ModelTJ-A038
Part NumberTJ-A038
TypeDisplayPort Switchers
Changer TypeDisplayPort Switch/Extender
ColorBlack
Ports2
SpecificationsCompatible with all DisplayPort input and HDMI, DisplayPort output
Comply with DisplayPort 1.4, 1.3, 1.2, 1.0 specifications
Support resolution:
8K@30Hz
4K@120Hz, 60Hz
1440P@165Hz, 144Hz, 120Hz, 60Hz (165Hz, 144Hz HDMI output is not supported)
1080P@240Hz, 165Hz, 144Hz, 120Hz, 60Hz (165Hz, 144Hz HDMI output Not supported)
(Depends on your graphics card, monitor, TV, operating system and DP cable, HDMI cable support)
Support operating system: Apple (iOS) system, Windows system, Android system
Support HDR
Support SST (Mirror) and MST (Extended) mode
Support 4:4:4, 4:2:2, 4:2:0
Input Connector1 x DisplayPort 1.4
Output ConnectorDisplayPort1.4+HDMI 2.1
Maximum Resolutions8K@30Hz 4K@120Hz
BandwidthHigh Speed 32.4Gbps
FeaturesDisplay Port HDMI: Creative dp 1.4 splitter, support dp input to dp and hdmi output simulantely. Greatly satisfying your individual creative needs. Ideal for digital signage in schools, churches, conference rooms, trade shows, hotels and retail outlets
Parameter Information 1): Single dp to dp support 8k@30hz, 4k@60/144hz, 2k@165hz. 2): Single dp to hdmi support 8k@30hz, 4k@60/122hz, 2k@144hz. 3): dp to dp+hdmi support dual 4k@60hz or 5k@60hz + 1080p@60hz: 4): when you use a thundebolt 3/USB C to dp cable connecting dp input interface, the dp and hdmi output can only support 4k. CHEC
Dimensions12 x 6 x 0.08 inches
Weight1.2 ounces
Package Quantity1
Package Contents1 X Directional DP to DP+HDMI Switcher
1 X DC 5V power line
1 x instructions

Questions about this item

Does my computer need a DisplayPort 1.4 output with MST support to use this switch?

Yes, the hub requires a DP 1.4 source that implements Multi-Stream Transport; without MST the second display cannot be driven in extended mode.

Can I keep an older 1080p 60 Hz monitor on one output while running a 4K 120 Hz display on the other?

Each port negotiates its own timing, so a 1080p 60 Hz screen and a 4K 120 Hz screen can operate simultaneously in MST extended mode.

How do I confirm both monitors are running in extended desktop mode after connecting them?

Open Windows display settings — two distinct numbered displays should appear side by side, each showing its native resolution and refresh rate.

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