
I tried the following results along with fast switching: 1. Keyboard drop CTRL (backlit)2. Manjaro desktop (based on Arch Linux)3. A Macbook Pro was prepared for work. I couldn't get the keyboard to work on any port. PWAY KVM was the only one that worked with this combination.

4 Port USB 3.0 Switch Selector - Pubioh KVM Switch for Mouse, Keyboard, Printer, Scanner - 2 in 4 Out Sharing Box with Switch Button and 2 USB 3.0 A to A Cables
11 Review

π HDMI 2.0 4 Port KVM Switch with 4K@60Hz, 2K@144Hz,1080P@120Hz Support, 18Gbps Bandwidth, USB 2.0 Keyboard/Mouse/Printer/Monitor/PC Selector, Audio Out/Mic In, HDR10, Dolby Vision, Dolby/DTS, HDCP2.2 Compatibility
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π TRENDnet TK-803R: 8-Port Rack Mount KVM Switch with VGA & USB Connection, USB/PS2 Support, Device Monitoring, Auto Scan - Control 8 Computers/Servers
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CKL Quad Monitor HDMI KVM Switch 4 Port 4K@30Hz with Cables - Extended and Mirrored Display Support for Windows, Linux, and Mac
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Computer case AeroCool Cylon black
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Fractal Design Node 304 - Black - Mini Cube Compact Computer Case - Small Form Factor - Mini ITX β mITX - Enhanced Airflow - Modular Interior - Includes 3x Fractal Design Silent R2 120mm Fans - USB 3.0
42 Review

MasterBox Q300L Micro-ATX Tower with Magnetic Dust Filter, Acrylic Side Panel, Adjustable I/O & Ventilated Airflow, in Black
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Computer case Deepcool Matrexx 55 MESH black
64 Review