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Compact black converter box with Mini DisplayPort, HDMI, VGA, 3.5 mm audio and USB-C inputs, HDMI output

Monoprice Inc.

Monoprice Inc. 139798 4K@60Hz audio video converter mDP HDMI VGA 3.5mm USB-C

SKU CH-FYQ4-XBKFH MPN 139798

Converts Mini DisplayPort, HDMI, VGA with 3.5mm audio, and USB-C to 4K@60Hz HDMI with auto input switching

  • Key featuresAccepts mini displayport, HDMI, VGA with 3.5 mm analog audio
  • Product weight1.55
  • Connect four source types through one converter — Mini DisplayPort, HDMI, VGA with 3.5 mm audio and USB-C
  • Enjoy crisp 4K video at 60 Hz on any HDMI display
  • Auto-switching selects the next live input without manual intervention
  • VGA sources keep their analogue sound via the 3.5 mm jack
  • Lightweight 1.55 kg unit fits neatly into any workstation setup

Multi-input HDMI converter

The Monoprice 139798 accepts Mini DisplayPort, HDMI, VGA with 3.5mm analog audio, and USB Type-C audio/video signals and converts them to a single HDMI output at up to 4K resolution and 60Hz refresh rate. It is designed for users who need to switch between several legacy and modern video sources on one display.

Check source ports and audio routing

Verify that each source device provides the required connector type and that VGA sources include a separate 3.5mm audio feed for sound. The converter does not downscale 4K input for lower-resolution displays, so confirm your monitor or projector supports the native output resolution.

Automatic switching under continuous use

The unit automatically selects the next active input when the current source is turned off, maintaining a stable HDMI signal without manual intervention during extended sessions. Its 1.55kg chassis dissipates heat passively, allowing uninterrupted operation in fixed installations.

How it compares

Measured against everything we stock in Video Signal Converters, at today’s prices. Recalculated every night.

Price $146.99
Pricier than about 90% of the 1,459 comparable items (median $17.99).

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Specifications

Product
Brand nameMonoprice
Model name139798
Part number139798
Size & build
Shipping weight0.70 kg
Package size203 × 188 × 71 mm

Questions about this item

What cables or adapters come in the box with the 139798 converter?

The unit itself is supplied; Mini DisplayPort, HDMI, VGA, 3.5 mm audio and USB-C cables must be purchased separately.

Which input should I use for 4K at 60 Hz from a laptop?

Use the USB-C or Mini DisplayPort input; both carry video and audio and support the full 4K@60Hz output capability.

Does the 4K@60Hz rating apply to every input type?

Yes — Mini DisplayPort, HDMI, VGA with 3.5 mm audio and USB-C are all converted to a single HDMI output at up to 4K@60Hz.

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