(4 Port HDMI KVM Switch 4X2 Dual Monitor 4K@60Hz Extended Display USB KVM Switch 4 in 2 out for 4 PC Share Keyboard Mouse Monitor. 2)The KVM Switch can not increase the video out of your pc or laptop.
eBay
Vention HDMI-Compatible Cable Ultra 4K Slim HD Splitter Cord for PS4/3 Projector HDTV X-box Nintendo Switch 3D HD 2.0 Audio Cabo
Aliexpress UK
1x HDMI 4x1 quad KVM multi-viewer. 5 Ways Viewing Screen：The 4X1 Quad MultiView Selector support 5 viewing modes. You could see 4 HDMI input sources screen on one monitor by 4 ways, also can only see only one HDMI input source by full screen;.
eBay
1x2 4K HDMI-Compatible Splitter Switch 1 in 2 Out Video Distributor Amplifier Dual Display for Box PC Monitor Projector Laptop
Aliexpress UK
Used in great working condition and physical shape. Comes with what is in the picture.
eBay
1x2 4K HDMI-compatible Splitter Switch 1 in 2 Out Video Distributor Amplifier Dual Display for Box PC Monitor Projector Laptop
Aliexpress UK
4K 30hz 9x1 HDMI-compatible Multiviewer 4K 9 In 1 Out 1080P Screen Multi Viewer HDMI Multi-Viewer Seamless Switch With IR. 10 Ways Viewing Screen: 9X1 Quad MultiView Selector support 10 viewing modes.
eBay
HDMI-compatible Switch Bi-Direction 2.0 Splitter 1x2/2x1 Adapter 2 in 1 out Converter for PS4 Pro/4/3 TV Box 4K Switcher
Aliexpress UK
Five inputs accommodate the simultaneous connection of high definition video sources, such as HD player, Blu-ray player, Set Top Box, P&S3, Xbox360 etc. The output sends the high definition audio/video signals to a high definition display like HDTV.
eBay
HDMI-compatible Switch Bi-Direction 2.0 Splitter 1x2/2x1 Adapter 2 in 1 out Converter for PS4 Pro/4/3 TV Box 4K Switcher
Aliexpress UK
x-Pro® AV-Pro 3 to 1 Port HDMI Switcher V1.4b 3D 2K2K Supported. This ultra compact advanced HDMI Switch allows for simple switching between HDMI sources (Example Game System, DVD player, Blu-Ray player, Sky etc..). Simply plug and play and select using the button provided on the unit between your HDMI sources (LED Indicated) - Allows 3 devices to share 1 output with easy 1 button press switching between the 3 HDMI sources to the 1 HDMI output screen. Switching is simple, 1 button press enabled, LED will indicate which output is active. Intelligent switching is also available where devices are powered down, the switch will default to the next available powered source.
eBay
2 Port HDMI-Compatible 2.0 Switch 4K 2x1 1x2 Bi Directional Switcher 2 Input 1 Output Splitter for PS4/3 TV Box Switcher Adapter
Aliexpress UK
This 4K 60Hz HDMI Matrix 4x2 allows easy switching of 4 HDMI input sources to 2 HDMI displays or monitors via optical or 3.5mm stereo audio outputs. Built-in automatic equalization and amplification ensure optimal transmission without loss of video audio quality.
eBay
1x2 4K HDMI-compatible Splitter Switch 1 in 2 Out Video Distributor Amplifier Dual Display for Box PC Monitor Projector Laptop
Aliexpress UK
DTV / HDTV: 480i / 576i / 480P / 576P / 720P / 1080i / 1080P / 4K x 2K. Progressive scanning (50Hz & 60Hz): 480P, 576P, 720P, 1080P, 4K 2K. Maintain high resolution (max 2160p), 4K 2K. 1 X HDMI Switcher.
eBay
4K 30HZ MS2130 Real USB 3.0 HDMI-compatible Video Capture Card Game Recording Box 1080p 60fps Live Streaming for PS4 Ps5 Switch
Aliexpress UK