M-Audio Keystation 49 MK3 - Synth Action 49 Key USB MIDI Keyboard Controller with Assignable Controls, Pitch and Mod Wheels, and Software Included : Amazon.ca: Musical Instruments, Stage & Studio
UNO Synth Pro - Paraphonic Dual Filter Analog Synth
Finally, Connect a USB Hub and Audio in One Gadget, on Laptop or iPad - CDM Create Digital Music
Seamlessly integrate your hardware synth into a digital setup - YouTube
M-Audio Keystation 49 MK3 - Synth Action 49 Key USB MIDI Keyboard Controller with Assignable Controls, Pitch and Mod Wheels, and Software Included in Bahrain | Whizz MIDI Controllers
Analog synth crammed inside a USB stick
M-Audio
Bat Utility Belt: Hub Will Set You Free - Synth and Software
Zynthian: DIY Raspberry PI Linux Synthesizer and audio production tool / part 2 - YouTube
Dreadbox Typhon analog synth gets audio & MIDI over USB in firmware 4.0
Portami – Portable USB Midi lo-fi synth with onboard speaker and audio out. Designed to be a companion to small Midi keyboards. : r/synthdiy