We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black compact box with one Mini DisplayPort plug and three HDMI ports

STARTECH

STARTECH MSTMDP123HD Mini DisplayPort 1.2 to 3x HDMI audio video converter

SKU CH-1J9B-STQBY MPN MSTMDP123HD

Connects three independent HDMI displays to a single Mini DisplayPort 1.2 output with included power adapter

  • First connector1 - Mini-DisplayPort (20 pin) Male Output
  • Second connector3 - HDMI (19 pin) Female Output
  • Product typeMini DP to HDMI
  • Product colorBlack
  • DetailsCenter Tip Polarity: Positive Input Current : 0.5 A Input Vo
  • Key featuresUse this adapter to connect three independent displays to a

Output HDMI - 3 Port

Style Mini DisplayPort

  • Connect three independent displays from one mDP 1.2 port
  • Works with Lenovo ThinkPad and Microsoft Surface mDP devices
  • Compatible with HDMI projectors and monitors
  • Supports resolutions up to 4K across connected displays
  • Includes universal power adapter for reliable operation

Three independent displays from one port

The StarTech MSTMDP123HD connects three separate HDMI monitors to a single Mini DisplayPort 1.2 output. It is designed for users who need a multi-monitor workstation from laptops such as certain Lenovo ThinkPad and Microsoft Surface models. The hub supports audio pass-through to all connected displays.

Sustained multi-monitor operation

The adapter draws up to 0.5 A from the 110 ~ 240 AC supply via the included universal power adapter, delivering a stable 5 DC at 3 A to drive three outputs simultaneously. This external power ensures consistent signal quality across extended work sessions without taxing the host port.

Straightforward plug-and-play setup

The package contains the MST hub, a universal power adapter with NA, EU, UK and AU plugs, and a quick install guide. Connect the Mini DisplayPort male end to the host, attach three HDMI cables to the female outputs, and apply power. The main issue arises when the host graphics hardware does not support Multi-Stream Transport, limiting the hub to mirroring only.

How it compares

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

Price $79.99
Pricier than about 90% of the 1,459 comparable items (median $17.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameStarTech.com
Model nameMSTMDP123HD
Product typeMini DP to HDMI
Product colorBlack
Audio & video
SoundYes
Ports & slots
First connector1 - Mini-DisplayPort (20 pin) Male Output
Second connector3 - HDMI (19 pin) Female Output
Size & build
Cable lengthNo
Product dimensions0.6 in × 2.6 in × 4.5 in
Product weight0.26 lb (0.12 kg)
Shipping weight0.50 kg
Package size246 × 150 × 69 mm
In the box
In the box1 - Mini DisplayPort to 3x HDMI MST Hub
1 - Universal power adapter (NA/EU/UK/AU)
1 - Quick install guide

Other versions of this model

1 more in the same range

Questions about this item

Does the 3 A output adapter run hot or make noise when driving three monitors all day?

The hub draws only 0.5 A at the AC input and uses a passively cooled enclosure, so it stays cool and silent during continuous use.

Which cables or monitors must I already have to use the three HDMI outputs?

You need three HDMI cables with 19-pin connectors and HDMI-equipped displays or projectors; the hub supplies the 5 V 3 A power.

Will this work with my older laptop that only has a Mini DisplayPort 1.2 port?

Yes, the 20-pin Mini DisplayPort 1.2 male connector plugs directly into that port and drives three independent HDMI screens.

More in Video Signal Converters

Similar items