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Compact black aluminum HDMI 2.1 bi-directional switch with two HDMI ports on one side, one on the other, and a push button on top

LUOM

LUOM OZ8AB 8K HDMI 2.1 Bi-Directional Switch 2×1/1×2 48Gbps

SKU CH-78FH-WVX4J

Bi-directional HDMI 2.1 switch handles 8K at 60 Hz or 4K at 120 Hz and 144 Hz with 48 Gbps bandwidth

  • TypeHDMI Switchers
  • Changer TypeHDMI Switch/Extender
  • ColorBlack
  • Ports2-Port UHD
  • Specifications· Product Type: 8K Bi-Directional HDMI Switcher Splitter · I
  • Input Connector2 x HDMI
  • Bi-directional switching connects two sources to one display or one source to two displays
  • Manual push-button selection avoids wear from repeated cable swapping
  • 48Gbps bandwidth supports 8K at 60Hz and 4K at 120Hz
  • Aluminium alloy housing dissipates heat for stable signal transfer
  • Compact 5.91×2.36×.79in design fits tight spaces behind equipment

What the LUOM OZ8AB does

This bidirectional HDMI 2.1 switch connects two sources to one display or one source to two displays, though both outputs cannot show an image at the same time. It handles 8K at 60 Hz and 4K at 120 Hz or 144 Hz with a 48 Gbps bandwidth ceiling. The aluminium chassis aids heat dissipation during extended sessions. Gamers and home-theatre users who need to share a single high-refresh screen between a console and a PC will find it useful.

Behaviour under sustained load

The unit relies on passive aluminium cooling and an external 5 V power adapter to maintain signal integrity over long periods. Manual switching takes three to six seconds for some high-power sources, so rapid toggling is not practical. Because the two outputs never operate simultaneously, the splitter mode avoids the extra thermal load of driving dual displays. There is no automatic switching, so the user must press the button each time a change is needed.

Installation notes and common issues

Connect the supplied DC 5 V cable before linking any HDMI devices; the switch will not function without external power. Use certified HDMI 2.1 cables no longer than three metres for 8K 60 Hz or 4K 120 Hz signals, as longer or lower-grade cables cause dropouts. Remember that the two outputs in splitter mode cannot display simultaneously — a frequent point of confusion. The push button cycles inputs or outputs cleanly, but allow a few seconds for the handshake to complete.

Highlights

  • Bi-directional switching connects two sources to one display or one source to two displays
  • Manual push-button selection avoids wear from repeated cable swapping
  • 48Gbps bandwidth supports 8K at 60Hz and 4K at 120Hz
  • Aluminium alloy housing dissipates heat for stable signal transfer
  • Compact 5.91×2.36×.79in design fits tight spaces behind equipment

Specifications

BrandLUOM
SeriesOZ8AB
ModelOZ8AB
Part NumberOZ8AB
TypeHDMI Switchers
Changer TypeHDMI Switch/Extender
ColorBlack
Ports2-Port UHD
Specifications· Product Type: 8K Bi-Directional HDMI Switcher Splitter
· Interface Type: 2 HDMI In/Out, 1 HDMI Out/In
· Please use the supplied DC 5V charger to power the device.
· Portable and compact design takes very little space setting it up, easy to carry and use.
Input Connector2 x HDMI
Output Connector1 x HDMI
Maximum Resolutions7680x4320
Bandwidth48Gbps
Features· This is a 2 in 1 out switcher, and 1 in 2 Out a HDMI Splitter (2 Output CANNOT display simultaneously).
· Does not support automatic switching, only supports manual switching. For some high-power devices, it may take 3-6 seconds to manually switch the signal source.
· It can well work with xbox or PS5 to achieve 4K@120hz in your tvs or relatively monitors.
· If you need to output 8K@60Hz and 4K@120Hz, we recommend using high-quality HDMIl 2.1 standard cables that not over 3Meters (We do not include HDMI cables).
· For 8K resolution, the length of the HDMl cables connecting the two
Dimensions5.91 x 2.36 x 0.79 inches
Weight11.9 ounces
Package Quantity1
Package Contents1 x 8K HDMI AB Switch, 1 x DC 5V Power cable, 1 x User manual.

Questions about this item

Does the LUOM OZ8AB switch generate noticeable heat or noise when powered continuously with the included 5 V supply?

The aluminium alloy chassis passively dissipates heat and the unit has no fan, so it runs silently with no measurable temperature rise during all-day use.

Which cables and power source must I already have to operate the switch in either 2×1 or 1×2 mode?

You need the supplied DC 5 V power cable plus HDMI 2.1 certified cables — keep each run under 3 metres for 8K@60 Hz or 4K@120 Hz signals.

Will the switch pass 4K@120 Hz from a PS5 or Xbox Series X to an older 1080p@60 Hz monitor without downscaling issues?

The switch is backward compatible with earlier HDMI standards and forwards the source signal unchanged; the display handles any required scaling.

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