Hassle free, 2-Year Warranty
Fast, Free Shipping on Orders $35+
Lifetime Technical Support
30-Day Money Back Guarantee
Plugable USB-C デュアル HDMI 変換アダプタ MST 対応、2台の 4K 60Hz モニタを接続 Windows Chromebook 用 ドライバ導入不要
$39.95 USD
SKU: USBC-MSTH2Amazon Rating : (168 Reviews)
機能
- デュアルディスプレイ対応 - Windows または Chromebook システムの USB-C ポートにこのアダプタを接続するだけで、2 台の 4K 60Hz HDMI モニタを接続できるようになります。HDCP 対応のため、コンテンツ保護された Netflix や Hulu などのストリーミング動画も表示可能です。
- USBC - HDMI 接続 - 1 つの USB-C、または Thunderbolt や USB4 ポートに、4K 60Hz までの HDMI モニタを 2 台同時に接続できます。ビジネス用アプリケーションはもちろん、ストリーミング動画、ゲームなど表示負荷の高いアプリケーションも快適に動作します。
- プラグ ＆ プレイ - デバイスドライバのダウンロードや導入は不要です。この USBC-HDMI 変換アダプタは、USB-C ポートの持つ DP 代替モードグラフィック機能と MST 機能により、ノート PC の内蔵 GPU から直接 2 台の外部モニタを表示する仕組みです。
- 互換性 - この変換アダプタは、DP 代替モード（DP1.4 以上）対応のUSB-C、または Thunderbolt や USB4 ポートを搭載している、Windows 10、11 以上と ChromeOS 100 以上のシステムで使用できます。macOS システムは MST をサポートしていないため、当アダプタの使用は推奨しません。
- 2 年の品質保証 - Plugable は 2 年間の品質保証およびメールでのサポートをご提供いたします。正規販売元よりご購入ください。製品について質問がございましたら、Plugable Japan サポートまでお気軽にご連絡ください。
[米国内のみ] 当サイトから注文の場合送料無料
簡単な方法でデュアルディスプレイを実現
USB-C ポートが 1 つ搭載された PC に、4K モニタを 2 台接続したいとき、どうすればいいでしょうか。それを簡単に実現するのがこの「Plugable USB-C デュアル HDMI 変換アダプタ MST 対応（USBC-MSTH2）」 です。
このグラフィック変換アダプタは、最近販売されることが増えた DisplayPort 1.4 対応の USB-C ポート（Thunderbolt 4 ポートでも可）を搭載した Windows または ChromeOS システムで使用でき、ポート 1 つに 4K 60Hz までのモニタを拡張モードで 2 台接続できます。この変換アダプタは、DisplayPort 信号のもつ MST（マルチストリームトランスポート）機能を使用しています。アダプタに搭載された MST チップにより、PC システム USB-C ポートに実装された DisplayPort 代替モード（DisplayPort 信号）を 2 つの独立したディスプレイ・データとして供給する仕組みで、このためこの製品のためのデバイス・ドライバを導入する必要はありません。また、ネイティブの GPU を駆動する仕組みのため HDCP もサポートしており、Netflix や Hulu などのストリーミングサービスでコピー保護されたコンテンツを再生することができます。
ドッキングステーションなどに比べコンパクトな筐体のため、自宅やオフィス、その他の作業環境に簡単に持ち運ぶことができます。
注意１： 接続する PC システムの USB-C ポートが DP 1.2 にしか対応していない場合は、接続できる 2 台のモニタは 1080p 60Hz までの解像度になります。 4K 60Hz 対応のモニタを接続するためには、PC 側が DP 1.4 に対応している必要があります。
macOS は MST 機能をサポートしていません。USBC-MSTH2を macOS システムで使用することはできますが、1 台のモニタのみしか拡張できず、2台目の外部モニタは複製されます。
2 台の 4K 60Hz モニタ
4K 60Hz 解像度までの HDMI モニタを 2 台、1 つの USB-C ポートに接続することができます。
プラグ＆プレイ
PC システム内蔵の GPU を直接使用する変換アダプタのため、デバイス・ドライバの導入は必要ありません。
持ち運びに便利
コンパクトな筐体に約 17 cm のケーブルが付属しています。
ハイブリッド・オフィス使用のために持ち運ぶのにも適しています。
互換性
USB4、Thunderbolt または DP 代替モードに対応した USB-C ポート搭載の Windows 10、11 以上、ChromeOS 100 以上のシステムで使用できます。 macOS では 1 台しか接続できないため、使用を推奨されていません。
 |
 |
 |
 |
|
|---|---|---|---|---|
モニター数 |
2 |
2 |
2 |
2 |
グラフィックポート |
HDMI x2 |
HDMI x2 |
HDMI x 2、DP x 2（組み合わせて 2 つを使用） |
HDMI x 1、DVI x1（VGA に変換可） |
最大解像度 |
4K 60Hz |
1080p 60Hz |
4K 60Hz |
1080p 60Hz |
PC 接続タイプ |
USB-C |
USB 3.0 または USB-C |
USB 3.0 または USB-C |
USB 3.0 または USB-C |
デバイスドライバ導入の必要性 |
いいえ |
あり |
あり |
あり |
チップセット |
MST |
Silicon Motion |
DisplayLink |
DisplayLink |
Filter Help Articles and Frequent Questions by Category
Choose one or more filters within each category to narrow down the articles. Each selection will result in only displaying articles that include all of your choices.
Articles
Well how about that, it looks like we don't have any articles matching your filters! Try removing one of your choices or clear the filters to show all articles.
You can always contact support if you need help too!
What is the maximum resolution supported on the USBC-MSTH2?
The maximum resolution for the USBC-MSTH2 will depend upon the capabilities of the computer it is connected to. Most modern laptops that support USB-C DisplayPort Alt Mode should support two displays. However, the maximum resolution will depend on the supported DP version.
You may have to research some technical specifications for your laptop to see exactly what version of DisplayPort your computer supports.
- DisplayPort 1.2 should allow for two 1080P displays to be connected.
- DisplayPort 1.4 should allow for two 4K displays to be connected.
If you're unsure or can't find the appropriate technical specifications for the version of DisplayPort your computer supports, you may want to contact the computer manufacturer support team for more detailed information.
Does the Plugable USBC-MSTH2 video adapter come with a power supply?
This display adapter draws power from the USB-C port that it is connected to in order to function. So there is no need for an external power supply to operate this device but it is recommended to keep in mind that this will draw power from your computer.
Does the Plugable USBC-MSTH2 video adapter come with cables?
This device does not include any extra cables, but it does have a built-in USB-C cable for connecting to the host computer. For connecting displays, you will want to use a set of HDMI cables.
Will the USBC-MSTH2 work with a computer that supports Thunderbolt 3 or 4?
Because Thunderbolt 3 and 4 does support DisplayPort Alt Mode and Multi-Stream Transport (MST) mode, this display adapter should be fully compatible. The only exception for this is with Apple products, as they do not support Multi-Stream Transport (MST) mode.
Could I use a USB Type-A adapter To connect this with my computer if there is no USB-C port available?
This display adapter requires a connection that supports USB-C DisplayPort Alt Mode for extending the displays. The use of any adapter to convert a USB-C signal to USB Type-A would not have the capability of supporting display extensions. As such, this device would not function for extending displays when used in such a manner.
If your computer does not have a USB-C port, you may want to look into our USB 3.0 display adapters such as the following, which should be compatible:
- Plugable USB-C or USB 3.0 to Dual HDMI Adapter
- Plugable USB 3.0 and USB-C 4K DisplayPort and HDMI Dual Monitor Adapter
Note that each of these devices do require driver installation.
If I connect the Plugable USBC-MSTH2 to a MacBook, would I be able to see two distinct screens, or would both screens display the same content?
When you connect this directly to a MacBook, you will only see mirrored content on both screens. This is because macOS and iPadOS are not designed to support Multi-Stream Transport (MST) which the Plugable USBC-MSTH2 video adapter relies on to power two displays.
Does the USBC-MSTH2 work on any USB-C port?
The USBC-MSTH2 will only work with a USB-C port that supports DisplayPort Alt Mode for extending displays.
If your computer does not support DisplayPort Alt Mode, you may want to look into our USB 3.0 display adapters such as the following, which should be compatible:
- Plugable USB-C or USB 3.0 to Dual HDMI Adapter
- Plugable USB 3.0 and USB-C 4K DisplayPort and HDMI Dual Monitor Adapter
Note that each of these devices do require driver installation.
Are there any drivers or software that need to be installed in order to use this USB-C dual HDMI adapter?
There's no need to worry about downloading drivers, as the adapter does not require any additional software.
The USBC-MSTH2 does require a USB-C port that supports DisplayPort Alt Mode for extending displays.
If your computer does not support DisplayPort Alt Mode, you may want to look into our USB 3.0 display adapters such as the following, which should be compatible:
- Plugable USB-C or USB 3.0 to Dual HDMI Adapter
- Plugable USB 3.0 and USB-C 4K DisplayPort and HDMI Dual Monitor Adapter
Note that each of these devices do require driver installation.
Is this USB-C to dual HDMI adapter compatible with macOS, iPadOS?
It's important to understand that macOS and iPadOS are designed to only support Single-Stream Transport (SST) mode, so only a single display is supported. A second HDMI display connected to the USBC-MSTH2 is limited to mirror the screens. On the other hand, Windows has the capability to support both Single-Stream Transport (SST) and Multi-Stream Transport (MST) modes.
Can I Connect a DisplayPort (DP) Monitor to the HDMI Port on This Device Using an Adapter or Cable?
No. Most DisplayPort to HDMI cables and adapters are one-way adapters from a DisplayPort Source (computer or docking station) to a HDMI Sink (television, computer monitor, or projector). These cables do not work in reverse.
DisplayPort uses packet-based data transmission, breaking the video stream into individual packets of data allows for longer cable runs, use in both copper and fiber-optic cables, and allows for higher bandwidth than other video formats. It is relatively easy to convert from DisplayPort to HDMI (computers with HDMI output ports already do this internally) and dual-mode DisplayPort outputs have built-in adapters to output a HDMI signal for use with passive DisplayPort to HDMI adapters.
HDMI uses a video signal, similar to DVI, this requires more power to operate at the same cable lengths as DisplayPort and requires significantly more processing power to create DisplayPort packet-based data.
Externally powered HDMI to DisplayPort adapters do exist, these generally have a USB or small barrel plug for power, and can convert from a HDMI Source to DisplayPort Sink. In most cases they have reduced resolution or refresh rates compared to modern signal sources and can introduce delay in the data connection between the display and computer potentially causing reduced connectivity or display performance problems.
We do not currently recommend using HDMI to DisplayPort adapter with our docking stations. In our testing they have been unreliable compared to a native DisplayPort connection. Many of our newer docking stations include both HDMI and DisplayPort outputs to reduce the need for additional adapters or adapter cables.
No Sound? How to Change Your Default Audio Device to Your Plugable Product
Whether you're on Windows, macOS, or Linux, it's common to add new audio devices to your computer.
Some examples of additional audio devices you may want to switch to include:
- Bluetooth headsets, headphones, and speakers
- Speakers built into a display, such as a TV or monitor
- A USB sound card, digital audio converter (DAC), or analog to digital converter (ADC)
- USB microphones
- Audio jacks on a docking station
These steps don't apply to the Plugable Performance NIX HDMI Capture Card (USBC-CAP60).
Here are the steps that you need to set a new default audio recording or output device on different operating systems.
Set Audio Output Device
Set Audio Recording Device
Set Default Playback Device in Windows
- Check that your device is properly connected, and that any necessary drivers are installed
- It is also a good idea to make sure that your sound device is turned on, and that the device's volume control is not at the absolute minimum setting
- Right-click on the speaker symbol in the Windows taskbar/system tray
-
Windows 7/8.x—Select Playback Devices. The Sound window will open with the Playback tab highlighted
-
Windows 10/11—Select Open Sound Settings then click the link under 'Related Settings' for Sound Control Panel, then click the Playback tab
- Alternatively, after selecting Open Sound Settings, use the dropdowns under the Output header
-
Windows 7/8.x—Select Playback Devices. The Sound window will open with the Playback tab highlighted
- Find your device in the window
- A Plugable USB 3.0 docking station or sound-enabled display adapter will appear as Plugable Audio
- A Plugable USB 3.0 Silicon Motion docking station or sound-enabled display adapter will appear as SMI USB Audio
- A Plugable USB 2.0 docking station will appear as USB Multimedia Audio Device
- A Plugable USB Audio adapter will appear as USB Audio Device
- Right-click on the device you found in step 3 and select Set as Default Device. A check mark should appear next to your device, and sound should now play through it
- Click OK to exit the window
Additional Configuration for Bluetooth
Please see our pairing and configuration guide for Bluetooth devices.
Set Default Playback Device in macOS
- Open System Preferences
- Click Sound
- Select Output
- Select the most appropriate device
- A Plugable USB Audio adapter will appear as USB Audio Device
Set Default Playback Device in Linux
- Ensure that you audio device is connected to the PC
- If the audio device is self-powered, it is a good idea to make sure that it is powered on, and that the device's volume control is not at the absolute minimum setting
- Launch the 'Settings' application in your distro
- Go to the 'Sound' option
- Find the dropdown for your 'Output Device', and change it to your preferred output device
- For additional sound device controls, you may want to consider using Pulseaudio Volume Controls (package name pavucontrol)
Set Default Recording Device in Windows
- Check that your device is properly connected, and that any necessary drivers are installed
- It is also a good idea to make sure that your sound device is turned on, and that the device's volume control is not at the absolute minimum setting
- Right-click on the speaker symbol in the Windows taskbar/system tray
-
Windows 7/8.x—Select Recording Devices. The Sound window will open with the Recording tab highlighted
-
Windows 10/11—Select Open Sound Settings then click the link under 'Related Settings' for Sound Control Panel, then click the Recording tab
- Alternatively, after selecting Open Sound Settings, use the dropdowns under the Input header
-
Windows 7/8.x—Select Recording Devices. The Sound window will open with the Recording tab highlighted
- Find your device in the window
- A Plugable USB 3.0 DisplayLink docking station or sound-enabled display adapter will appear as Plugable Audio
- A Plugable USB 2.0 docking station will appear as USB Multimedia Audio Device
- A Plugable USB Audio adapter will appear as USB Audio Device
- Right-click on the device you found in step 3 and select Set as Default Device. A check mark should appear next to your device, and sound should now play through it
- Click OK to exit the window
Additional Configuration for Bluetooth
Please see our pairing and configuration guide for Bluetooth devices.
Set Default Recording Device in macOS
- Open System Preferences
- Click Sound
- Select Input
- Select the most appropriate device
- A Plugable USB Audio adapter will appear as USB Audio Device
Set Default Recording Device in Linux
- Ensure that you audio device is connected to the PC
- If the audio device is self-powered, it is a good idea to make sure that it is powered on, and that the device's volume control is not at the absolute minimum setting
- Launch the 'Settings' application in your distro
- Go to the 'Sound' option
- Find the dropdown for your 'Input Device', and change it to your preferred input device
- For additional sound device controls, you may want to consider using Pulseaudio Volume Controls (package name pavucontrol)
My Docking Station/Adapter Works Well With My Windows Laptop, but When I Close the Lid the Displays and Laptop Turn Off or Sleep. How Do I Fix This?
Most Windows notebook computers power management settings will default to putting the computer to sleep with the lid closed, regardless of any external displays, keyboard, or mouse connected to the computer. If this is happening but you would prefer the system to remain active with the lid closed utilizing the external display or displays, these settings can be changed by performing the following:
For Windows 10:
- Start by right-clicking on the Start button and select Power Options from the menu.
- From the right side of the Power Options settings page, select the blue link for Additional power settings
- From the choices present on the left-hand side of the Power Options window, please click on Choose what closing the lid does
- Make sure the setting for When I close the lid under the Plugged In column is set to Do Nothing
- Click the Save Changes button and restart the system (making sure that the laptop’s power adapter is also connected) and test the behavior again.
For Windows 11:
- Start by right-clicking on the Start button and select Power Options from the menu.
- In the upper left corner of the settings window, in the search box, type "lid" then select Change what closing the lid does from the search results
- Make sure the setting for When I close the lid under the Plugged In column is set to Do Nothing
- Click the Save Changes button to apply the new settings.
Closing the lid should no longer put the computer into sleep mode when an external display and power source is connected, instead one of the external displays should now become the Primary display with the desktop icons instead of the laptop's built-in display.
The lid may still need to be opened to perform the following tasks:
- To power on the computer from a fully powered off state
- To log into the computer if logged out or if the computer is restarted with the lid closed
- To wake the computer from a deep sleep state ( hibernation, or Windows hybrid sleep states )
Understanding Heat Generation in Electronics
It's not uncommon for users to notice a certain level of heat generation from electronics and by extension, Plugable products during operation. In this knowledge base article, we'll explore the reasons behind this heat generation and why it is considered a normal experience within reasonable limits.
Electronics, by their nature, generate heat during operation. This is primarily a result of the electrical current flowing through various components, such as integrated circuits, transistors, and other electronic elements. As Plugable products are designed to efficiently process and transfer data (among other functionality), some level of heat generation is inherent.
Factors Influencing Heat Generation:
- Power Consumption: The power consumption of a device directly influences the amount of heat it generates. Higher power usage, especially during data transfer or charging processes, can lead to increased heat.
- Enclosure Design: The design of the product's enclosure and its ability to dissipate heat play a crucial role. Adequate ventilation and heat sinks are often incorporated to manage and disperse generated heat effectively. This is evident in our TBT3-UDZ and TBT4-UDZ designs. The metal case in these docks are designed to function as a heatsink with thermal pads placed throughout the enclosure. This allows heat dissipation from inside to the outside, but will also make it feel as if the device is “too hot”.
- Ambient Temperature: The external environment may also play a role. Higher ambient temperatures can contribute to increased perceived heat from the product. This means that summer temperatures may increase the heat generation of not just Plugable products, but many other electronic devices.
Normal Heat Levels: While it is normal for electronic devices to generate heat, Plugable products are engineered to operate within safe temperature ranges. We conduct rigorous testing to ensure that the heat generated during normal operation falls within industry-standard safety parameters. While not all products are or need to be UL certified, we try to go by UL guidelines for thermal readings. The UL threshold is 77C/170.6F, and we aim for around 71C/160F.
Tips for Users:
- Ventilation: Ensure that Plugable products have sufficient ventilation around them. Avoid placing them in enclosed spaces where heat dissipation may be impeded.
- Usage Patterns: Intensive tasks such as high-speed data transfer or charging multiple devices simultaneously may result in increased heat generation. This is generally normal but may be more noticeable in such scenarios.
- Accessories: A number of our devices will allow for the connection of USB accessories and as such, these will require power. If too many “power-hungry” devices are connected, this will cause the device to run much hotter than expected. Be sure to keep in mind the power limits of your dock/device.
In conclusion, experiencing heat from Plugable products is a normal aspect of their operation. Users can rest assured that we prioritize the safety and efficiency of our devices. By understanding the factors influencing heat generation and following simple usage guidelines, users can make the most of their Plugable products while ensuring a reliable and efficient user experience.
How do I know if my computer supports Multi-Stream Transport (MST)?
Most modern laptops that support USB-C DisplayPort 1.2 Alt Mode should Support two displays.
You may have to research some technical specifications for your laptop to see exactly what version of DisplayPort your computer supports.
- DisplayPort 1.2 should allow for two 1080p@60Hz displays to be connected.
- DisplayPort 1.4 should allow for two 4K@60Hz displays to be connected.
- DisplayPort 1.4 with DSC 1.2 support should allow you to connect 8K@60Hz displays.
Display Stream Compression (DSC) 1.2 enables visually lossless compression for ultra-high-definition (UHD) displays, while also supporting High Dynamic Range (HDR).
If you're unsure or can't find the appropriate technical specifications for the version of DisplayPort your computer supports, you may want to contact the computer manufacturer support team for more detailed information.
How To: Set the Display Refresh Rate in Windows 11
Many modern displays can support above the default 60Hz refresh rate, however this may need to be manually set within Windows 11. Please note, not all computers, graphics adapters, and docking stations can support all resolutions and refresh rates.
Setting the Display Refresh Rate in Windows 11
1. Right-click on the desktop and select Display Settings from the drop-down menu
2. Scroll down to the Related settings subsection and select Advanced display
3. At the top of the Advanced display window, select the external display from the drop-down menu
4. From the Choose a refresh rate drop-down menu select the desired refresh rate
Refresh Rate Limitations
With Windows 24H2 and newer, dynamic refresh rates are supported, this allows the system to adjust the display refresh rate to save power, up to the selected refresh rate. As a consequence of this new mode, when selecting the display refresh rate you may see an asterisk. This indicates that selecting the specific refresh rate may reduce the display resolution or image quality in order to prioritize the refresh rate. This exposes the refresh rate option from the display even if the display cable or computer is incapable of supporting that refresh rate at the native resolution and is the intended behavior per Microsoft. [1]
In the screenshot below the left side shows the 4K 120Hz capable display limited to 60Hz refresh rate without asterisks, and on the right the same display after setting the refresh rate to “120 Hz*”, the “Desktop mode” resolution has been reduced to 2560 x 1440 (1440p) instead of 3840 x 2160 (4K UHD). Unlike when using the display scaling option this also causes a reduction in image quality. On the right side asterisks are no longer shown in the refresh rate list. Setting the refresh rate back to 60Hz does not change the resolution, you will have to go back one page and set the resolution manually.
References
[1] Windows Insider description of new behavior (https://blogs.windows.com/windows-insider/2023/08/31/announcing-windows-11-insider-preview-build-25941-canary-channel/)
Is the USBC-MSTH2 Compatible with macOS?
The USBC-MSTH2 is not compatible with macOS. macOS doesn’t support MST (Multi-Stream Transport) —the underlying technology driving the USBC-MSTH2, so while the adapter is technically compatible with Apple USB-C devices, you can only extend to one 4k monitor, the second external monitor will be mirrored.
