Amazon.com: MANHATTAN 4 Port KVM Switch – Audio & Microphone Functionality with USB Support – for Managing Multimedia Systems on Computer & PC – 151269 : Electronics
CAAB-E3112, 2 Ports True 4K USB-C KVM Switch with DisplayPort output and 3.5mm analog audio function
Black Box ServSwitch Wizard KVM USB Extender with Audio - monitor/USB/audio extender - ACU5250A-R2 - KVM Extenders - CDW.com
D-LINK KVM-221 KVM Switch 2 Port USB Audio VGA Monitor Keyboard Mouse 1.8m cable | eBay