Review: TeckNet 3 Port HDMI Auto-Switcher

TeckNet HDMI Switcher 3 Port

The TeckNet 3 Port HDMI Switcher is one of those devices you don’t know you need. I definitely didn’t know I needed one until after I purchased it (I kind of did… hence purchasing it!). The concept behind this device is simple: Have the ability to use 3 x HDMI devices – over a single HDMI cable, thus freeing up port space on your TV as well as ugly cable trails!


  • 3 x HDMI input ports
  • 1 x HDMI output port
  • IR blaster
  • Optional 5V (DC) power input – although the unit self-powers via HDMI
  • Physical switch button on the front of the device
  • HDMI v1.4a
  • HDMI resolutions: 1080p / 1080i / 720p / 576p / 576i / 480p / 480i
  • Audio formats: DTS-HD / Dolby-true HD / DTS / Dolby-AC3 / DSD
  • Max length HDMI cables supported: 25m


The install and setup process for this device is as simple as the features list above.

  1. Plug in the HDMI cable from your TV, into the “Output” port on the device.
  2. Plug in a HDMI cable from one of your devices, into one of the “Input” ports
  3. Repeat step 2 two more times
TeckNet HDMI Switcher - HDMI Ports and suggestions

Et voila! Your device is now setup and ready to go! Change your TV to the correct source (for example: HDMI 1 on your TV) and then use the IR blaster included with the TeckNet HDMI Switcher to switch between your 3 HDMI sources! Do bear in mind though that this device supports HDMI 1.4a which technically supports 4K2K, however the product description on both Amazon and TeckNet’s website does not list 4K as one of the supported resolutions. It’s worth noting that some users do actually report 4K signals working via the device though!

I have my devices set up as follows:

  • HDMI 1 on my TV -> TeckNet output
  • Input 1 -> Xbox One
  • Input 2 -> Computer/Laptop
  • Input 3 -> Google Chromecast

Why buy this? What’s the point?

This is potentially a very good question! In response to which, I can provide a couple of use cases that I’ve come across:

  1. You have an older TV which has a very limited number of inputs. I’ve seen TVs with only 2 HDMI ports, meaning that only two of my devices can be connected at any given time!
  2. Your TV is wall mounted, meaning adding new devices to your collection and cabling them in is going to be a massive pain! In that case, I’d leave the permanent devices plugged into my TV (e.g. Google Chromecast/Amazon Fire TV Stick) and hidden away, freeing up a spare, hot-swappable and easily accessible HDMI port!


This device is incredibly simple to setup, could save you a fair amount of money in extending your existing TV’s input capacity. At the time of purchasing this product, it cost me £9.99.

Switching between sources is incredibly quick and the unit will even auto-switch between source when a new signal is detected. For instance:

I am sat watching TV via my laptop/computer (plugged into Input 2 as previously mentioned) and I come across a video on YouTube on my phone. If I start streaming via my Chromecast (Input 3) then the TeckNet will detect that new signal and will switch the source for me without the need for manual intervention! Call me lazy, but I find that so useful!

Useful links

Amazon UK:

Amazon US:

TeckNet’s website:

Product page:

Will Stocks

Will Stocks

As a career "IT person" and technology enthusiast, I've been around technology for over 8 years now. From enterprise-grade hardware to consumer equipment, IT Support to Systems Administrator - I'm passionate about all forms of tech, learning how it works, integrates and the scenarios in which different people would use them. I started in 2017 and have also contributed to other websites around the Internet.

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