Startech 4 Port 4 x 1 HDMI Switch

  • RS Stock No. 123-8074
  • Mfr. Part No. VS421HD4K
  • Brand Startech
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): CN
Product Details

VS421HD4K HDMI Switch

The VS421HD4K 4-port HDMI 4K switch lets you share a display or projector with four HDMI-enabled audio / video source devices. The switch features four independent inputs that each support 4K resolution and 7.1 surround sound audio.

The 4-port switch also features MHL support on HDMI input port 1, enabling video output video from MHL-enabled mobile devices such as Samsung Galaxy tablets and smartphones.

Astonishing Picture Quality with 4K Support

You’ll be amazed at how this video switch maintains Ultra HD picture quality. 4K is supported by the latest A/V devices and delivers four times the resolution of 1080p. Plus, because the switch is backward compatible with high-definition 1080p, you can rest assured any video source will look great in your digital signage application.

Solid Aluminium Housing Ensures Fixed Positioning

Constructed of solid aluminium, the HDMI switch is durable and heavy enough to prevent the unit from lifting or sliding around if the attached HDMI cables are bumped or shifted. Plus, its small footprint makes it easy to integrate the switch into any boardroom, classroom, home theatre, or digital signage application.

Hassle-free Operation with Auto Switching & EDID

This switch ensures effortless operation with automatic switching that detects and selects a newly connected device. Automatic switching encourages on-the-fly collaboration among colleagues, by making it easy to share your projector between multiple source devices in a boardroom or classroom environment. The VS421HD4K also supports manual operation using the included IR remote control, or the built-in front panel toggle switch directly on the device.

The switch also saves time during setup with EDID emulation ensuring all of your native settings such as resolution and refresh rate are communicated between your display and video source devices. EDID emulation maximizes compatibility with your 4K display, ensuring a convenient plug-and-play installation.

The VS421HD4K is backed by a 2-year warranty and free lifetime technical support.

Features & Benefits

• Astonishing picture quality with support for Ultra HD 4K
• Solid aluminium housing ensures fixed positioning
• Hassle-free operation with automatic 4-port switching
• 4x1 HDMI switch with MHL support
• IR remote control included
• 7.1 Surround Sound Audio
• Small footprint
• Front panel toggle switch button
• EDID emulation
• Take advantage of 4K (Ultra HD) video with HDMI 4K splitter enabling you to handle the latest devices and displays
• Ensure your switch stays where you put it. Unlike plastic splitters that get dragged out of place by attached HDMI cables, the VS421HD4K features a solid aluminium housing that will stay put
• Hassle-free operation with automatic switching and EDID emulation


• Share 4K television or projector with four different 4K video sources
• Collaborate on the fly with colleagues, by connecting multiple users to the same display and switch between input devices
• Use in digital signage applications to display multiple source devices at different times
• Use in your home theatre to connect four AV devices to your television, such as Blu-ray players, cable / satellite set top boxes, and computers

What’s in the package?

• 4-Port 4K HDMI Switch
• IR cable
• Remote control
• Universal power adapter (NA, EU, UK, AU)


How can I tell if my device is MHL compliant?

Mobile High-Definition Link (MHL) allows a standard USB connector to carry digital video signals. To use the MHL output from a mobile device using a micro-USB connector, the MHL output must be converted by using an MHL adapter. MHL can only be adapted to HDMI. Although many mobile devices use the micro-USB connector and the MHL adapters can plug into your mobile device, the mobile device still requires MHL support. MHL support is a hardware specification on your mobile device, and it cannot be resolved by applying updates of any type. To determine if your mobile device supports MHL, research the manufacturer specifications for your mobile device. You can also search for your device on the following website:

Attribute Value
Device Type Switch
Video Connection Type HDMI
Number of Ports 4
Number of Video Inputs 4
Number of Video Outputs 1
Maximum Resolution 3840 x 2160
Dimensions 85 x 139 x 14mm
Weight 274g
Audio Connection Type HDMI
Depth 139mm
Height 14mm
Width 85mm
23 In stock for FREE next working day delivery
Price Each
£ 77.04
(exc. VAT)
£ 92.45
(inc. VAT)
Per unit
1 +
Related Products
The VS721MULTI Multiple Video Input to HDMI® Switcher ...
The VS721MULTI Multiple Video Input to HDMI® Switcher enables users to switch between 7 different audio-video sources to a single HDMI-equipped display.This versatile switcher is the perfect solution for combining digital and analogue video sources (RGB/YPb Pr/YCb Cr) with your digital HDMI® display, eliminating the cost of upgrading individual components ...
The ST124HDMI2 4 Port High Speed HDMI® Video ...
The ST124HDMI2 4 Port High Speed HDMI® Video Splitter with Audio lets you share a single HDMI source with up to 4 HDMI or DVI-D enabled displays/receivers, without sacrificing image or sound quality. Mounting brackets are included for a tidy, professional installation.Supporting true HD video resolutions up to 1080p, this ...
This 2-Port 4K HDMI splitter connects your HDMI ...
This 2-Port 4K HDMI splitter connects your HDMI video source to two HDMI displays at the same time, without distorting or degrading your video signal. For dependable performance, the splitter features a durable metal housing that provides passive cooling.True 4K at 60Hz and HDRWith transmission bandwidth up to 18Gbps, this ...
The HDMI V2 range of splitter and switches ...
The HDMI V2 range of splitter and switches fully conform to the latest High Speed HDMI specification. They are optimized for distributing HDMI video and embedded multi-channel digital audio to 4K display environments such as residential or digital signage markets and computer lab applications. The 3 port HDMI switch routes ...