Max support 4K high resolution and downward compatible with other resolutions. Rybozen KVM HDMI Switch is an excellent choice to share 2 USB devices between two systems on one monitor. Allows you to share the mouse keyboard, display with two computers.
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USB 2.0 KVM Switch Switcher 1920*1440 VGA SVGA Switch Splitter Box 2 Port with Two Cables for Keyboard Mouse Monitor Computer
Aliexpress UK
YOUTINGHDAV KVM Switch 2 Monitors 3 Computers HDMI, USB 3.0 KVM Switch Dual Monitor 4K@60Hz EDID Emulator for 3 Computers Share Mouse Keyboard, with Wired Remote
eBay
HDMI KVM Switch 4K 60Hz 4-port USB KVM HDMI Switch selector Box USB 2.0 and HDMI 2.0 Switch KVM HDR for mouse,keyboad,monitor
Aliexpress UK
Note: This dual monitor KVM supports 2 DP dual-screen display (This function requires your PC to support dual display or multi-display, then you can use this KVM to achieve 4 PCs to share 2 monitors. ).
eBay
USB 2.0/USB 3.0 Switch USB KVM Switch Selector USB 2.0 USB 3.0 BI-Direction Switch Splitter Printer Keyboard Mouse Sharing
Aliexpress UK
【Great Compatibility & 2 Switching Mode】dual monitor KVM switch driver-free for Windows 11/10/8/7/XP and Mac OS.plug and play. The LED indicate the active computer. Switch type KVM Switch. 【Splicing Extended and Copy Mode】DP dual monitor kvm switcher supports three display mode: splicing mode, copy mode and extend modes.
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UGREEN USB KVM Switch USB 3.0 2.0 Switcher KVM Switch for Windows10 PC Keyboard Mouse Printer 2 PCs Sharing 4 Devices USB Switch
Aliexpress UK
1 x iDsonix USB 3.0 Switcher. 2 x iDsonix 3.3FT/1M Cable. 1 x iDsonix Product Manual.
eBay
2X2 KVM Switch Dual Monitor 4k 60Hz HDMI 2.0 KVM Switch Extended Display HDMI DisplayPort USB 3.0 KVM Switch 2 in 2 out for PC
Aliexpress UK
4-Port KVM Switch. Connector : 15 Pin VGA Male to Male + USB A/B. Compatible with XGA, SVGA, VGA, and UXGA. This cable is designed with VGA + USB under one jacket. Manual Push Button Switching. Easy installation, just plug and play.
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PzzPss USB KVM Switch 2 Port VGA SVGA Switch Box USB 2.0 KVM Mouse Switcher Keyboard 1920*1440 VGA Splitter Box Sharing Switch
Aliexpress UK
KVM Switch Dual Monitor Ultra HD 4K@60Hz: Our kvm switch 2 monitor support resolution 4K@60Hz, 2K@120Hz, 2K@144Hz. It requires every Laptop/PC support 2 screen or above display functions. LED indicate the active computer.
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USB 2.0 Hub USB Hub 2.0 Multi USB Splitter Hub Use Power Adapter 7 Port Multiple Expander 2.0 USB Hub With LED USB Switch For PC
Aliexpress UK
Since Mac OS does not support MST (Multi-Stream Transport), two duplicated monitor will be displayed. Switch type Push Button, Rocker Switch.
eBay
KVM Switch VGA USB 2.0 Switch Adapter Shared Controller 4 Input 1 Output For Computer Projector Printer Keyboard Mouse KVM cable
Aliexpress UK