Amazon.com: AAO 4x1 HDMI KVM Switch 4 Port Ultra HD 4K@30Hz, USB 2.0, HDCP 1.2, No Power Adapter Required, Support Wireless Input Device and Hotkey Switch, with 4 HDMI and USB Cables : Electronics
Amazon.com: GREATHTEK KVM Switch HDMI 4 Port Box, UHD 4K@30Hz & 3D & 1080P Supported, Hot Key Switch, with 4 USB-B and 4 HDMI Cables : Electronics
2x2 USB 3.0 KVM Switch Dual Monitor DisplayPort 1.4 4K 144Hz 8K 30Hz C – CKL KVM Switches
4 Ports True 4K DisplayPort KVM Switch with USB 2.0, Two-way Audio, PAAG-114A