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A Big KVM Presentation Solution for Your Small Business

Joel R. Cruz • March 11, 2020

In presentation or collaboration settings, sometimes there are multiple presenters or the input source needs to change during the meeting. This involves switching cables as well as selecting a different source on the display. What a distraction. The rise of KVM presentation switchers has definitely made meetings more efficient by saving time and eliminating setup headaches.



The BZBGEAR BG-PS21-4K is a great KVM presentation solution for small meetings as it switches between one HDMI input and one USB-C input to an HDMI display. It supports 4K@60Hz 4:4:4 through the HDMI input, while you get 4K@30Hz by connecting through the USB-C input. Just remember to use a designated USB-C cable that handles 10Gbps as the ones that come with your smartphone are not equipped with the proper amount of bandwidth. The USB-C input also provides up to 40 watts of charging ability so it charges your device while you’re connected. Additionally, there is a smart built-in EDID setting selected by the 4-pin DIP switch on the front panel.

BG-PS21-4K top view

The BG-PS21-4K supports stereo and multi-channel audio through the HDMI inputs. Along with the audio insertion or embedding for the HDMI output, the audio is de-embedded in unison to a balanced analog audio output. Device extensions are provided using a type-B USB port for host connection, and two type-A USB ports for HID devices such as keyboards, microphones, and cameras.

BG-PS21-4K front view

This KVM presentation switch has many options for control. It can be manually controlled using the front panel buttons as well as with RS-232 command. CEC allows control of the display device via the front panel buttons offering RS-232 and CEC commands. Auto mode is a cool feature allowing the switcher to automatically switch to the first detected source device. When the active source is disconnected, the unit switches to the lowest numbered input.

BG-PS21-4K back view

We demoed the BG-PS21-4K KVM presentation switcher on our YouTube channel BZB Express TV. You can also catch the video above in this article.


For more information, contact BZBGEAR at 1.888.499.9906 or email [email protected]. Browse our online catalog for economical solutions regarding your project. Make sure to catch the buzz on BZB Express TV for unboxings and demos. And please show your support by subscribing! We'll keep you informed on the latest AV gear.

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