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Small black rectangular adapter with one DisplayPort plug and two HDMI ports

j5create

j5create DisplayPort to Dual HDMI Adapter 4K@60Hz MST Hub

SKU CH-79AN-77J5K

Connects one DisplayPort source to two HDMI displays with 4K at 60 Hz extended or mirrored output

  • TypeHDMI Extender Adapter
  • Drives two 4K monitors at 60 Hz from one DisplayPort
  • Extends or mirrors desktop across both screens with audio
  • Backward compatible with 4K 30 Hz and 1080p 60 Hz
  • Requires DP 1.4 source for dual 4K 60 Hz
  • Cable length must not exceed 6.5 ft for full performance

DisplayPort MST hub for dual HDMI monitors

This DisplayPort to dual HDMI adapter lets a single DisplayPort source drive two HDMI displays in extended or mirrored mode. It synchronises audio and video across both outputs and is built for desktops and laptops with a native DisplayPort connector. The hub uses Multi-Stream Transport to deliver independent streams to each screen.

Suited for dual-monitor setups on DP 1.4

Users whose graphics output supports DisplayPort 1.4 can run both screens at 4K 60 Hz. Systems limited to DP 1.2 are restricted to a single 4K 60 Hz stream or dual 4K 30 Hz operation. The adapter will not function when plugged into a docking station, USB hub or KVM switch, so buyers who rely on those intermediates should look elsewhere.

Cable length limit of 6.5 ft for 4K 60 Hz

Reliable 4K 60 Hz transmission requires each HDMI cable to stay at or below 6.5 ft. Longer cables or displays and cables that do not support 4K 60 Hz will force a lower resolution or refresh rate. The host must also provide a DisplayPort 1.4 signal to unlock dual 4K 60 Hz; otherwise the hardware falls back to the DP 1.2 limits described above.

Highlights

  • Drives two 4K monitors at 60 Hz from one DisplayPort
  • Extends or mirrors desktop across both screens with audio
  • Backward compatible with 4K 30 Hz and 1080p 60 Hz
  • Requires DP 1.4 source for dual 4K 60 Hz
  • Cable length must not exceed 6.5 ft for full performance

Specifications

TypeHDMI Extender Adapter

Questions about this item

How do I install the DisplayPort to Dual HDMI adapter, and what step do people often miss?

Connect the DisplayPort plug to a DP 1.4 source on the computer, then attach two HDMI cables no longer than 6.5 ft to monitors that also support 4K@60Hz. The step often missed is confirming the host port is DP 1.4; a DP 1.2 port only drives one 4K@60Hz or two 4K@30Hz displays.

What maintenance or replacement will this adapter need later?

No scheduled maintenance is required. If a monitor stops syncing, replace the HDMI cable first — cables longer than 6.5 ft or rated below 4K@60Hz are the usual cause. The adapter itself has no moving parts or firmware to update.

What limit appears first when I run both screens at 4K@60Hz for hours?

The host graphics card must sustain DP 1.4 bandwidth for two 4K@60Hz streams. If the GPU or its driver throttles under sustained load, one or both displays will drop to 4K@30Hz or 1080p@60Hz before the adapter overheats.

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