Amazon.com: KVM Switch with Serial Port Control, 4K@60Hz 4 in 1 Out HDMI KVM Switcher Box for Share Mouse Keyboard and Monitor, Can Work with Pi-kvm, Compatible with Windows/Linux/Mac System : Electronics
8-Ports 4K 60Hz HDMI KVM-Switch Control up to 8 Device RS232/ LAN Port Control with 4 Pcs 5ft/1.5m KVM Cable, TESmart HKS0801A1U - KVM-Switch Versand
TESmart 8X1 HDMI KVM Switch 8 Port Enterprise Grade Support 4K@60Hz Ul – BlessMyBucket
HDMI KVM switch 16 port 4K60Hz Autoscan, Rackmount, RS232 TESmart
Avenview 4x1 HDMI Switcher with IR and RS232 Control SW-HDM-4X1
8x2 HDMI Matrix combines the video Auto-switching with Audio Embedder, EDID, IR, and RS-232 serial control - XKSM-S1092
CKL 4x2 HDMI Switch Splitter 4 in 2 out with IR Remote RS232 Control Support 1080P 3D CKL-4H2
4K 4 Ports HDMI Switch combines the video Auto-switching with EDID, IR, and RS-232 serial control function - VKGM-S41
HDNET-4Ps - Smart-AVI 4-Port 4x1 HDMI Video Switch with RS232 & Automatic Swtiching
HDMI Matrix switch 4X4 4K 60hz HDCP RS232/LAN Control TESmart
CYP 4-Way 4K HDMI Switcher with advanced EDID management, IP, RS-232, & IR Control