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Compact black adapter with Mini DisplayPort plug, two DisplayPort sockets and a Micro USB power lead

Corn Electronics

Corn Electronics Mini DisplayPort to Dual DisplayPort Splitter 4K@60Hz MST

SKU CH-2Y8K-797KZ

Splits one Mini DisplayPort 1.2 signal into two DisplayPort outputs at 4K 60 Hz on Windows with MST, mirror only on Mac, and includes a Micro USB power cable

  • Refresh frequency4K@60 Hz Resolution
  • Conductor typeMini Displayport
  • Build detailsDual Displayport
  • Connect two 4K displays at 60 Hz from one Mini DisplayPort
  • Extend or mirror on Windows with MST support
  • Mirror only on macOS — extended mode not available
  • Micro USB power cable included for stable operation
  • No driver installation needed, plug and play

What This Splitter Does

This adapter converts a single Mini DisplayPort 1.2 output into two DisplayPort connections, each capable of 4K resolution at 60Hz. It uses Multi-Stream Transport to enable extended desktop modes on Windows, while Mac systems are limited to mirrored output only. A Micro USB power cable is included and must be connected for stable operation.

Windows Extended Mode vs Mac Mirror Only

Windows users gain dual independent displays for multitasking across two 4K monitors. Mac users cannot extend the desktop; the adapter only mirrors the same image to both screens. Buyers who need extended desktop on macOS should look at a different solution, as this hardware does not support that mode on Mac OS.

Requires DP 1.2 GPU With MST Support

The source must provide a Mini DisplayPort 1.2 signal and the graphics card must support more than two external displays. Intel HD Graphics is limited to three external monitors total. The adapter will not function with Microsoft Surface Dock or any source lacking MST capability.

How it compares

Measured against everything we stock in Mini DP Monitor Cables, at today’s prices. Recalculated every night.

Price $51.99
Pricier than about 99% of the 243 comparable items (median $13.99).
Refresh frequency 4K@60 Hz Resolution
Typical for this category: the median of 13 items is 60 Hz.

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Specifications

Product
Brand nameCorn
Model nameMini Displayport to Dual Displayport Splitter
Display
Refresh frequency4K@60 Hz Resolution
Size & build
Conductor typeMini Displayport
Build detailsDual Displayport

Questions about this item

Does my graphics card need to support MST and drive more than two external displays for the Corn Electronics splitter to work?

Yes — a Mini DisplayPort 1.2 GPU that supports more than two external displays is required; Intel HD Graphics is limited to three external monitors.

Will the splitter deliver extended desktops on both monitors if I keep using a Mac?

No — under Mac OS the splitter only supports mirror mode; extended mode (MST) is available only on Windows.

How can I verify both connected displays are running at 4K 60 Hz after plugging everything in?

Open your OS display settings and confirm each monitor shows 4K@60Hz; the splitter is backward compatible with 4K@30Hz, 1080P and 720P if a display negotiates a lower rate.

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