audiofront usb box that supports standard expression/sustain pedals and it works really well : r/softsynths
Roll Up Electronic Drum Set 7 Silicon Pads Built in Speakers with Drumsticks Sustain Pedal Support USB MIDI 2 Colors Optional|Electronic Drum| - AliExpress
LAUNCHKEY37-MK3_K2 Novation Launchkey 37 MK3 37-Key MIDI Keyboard with Sustain Pedal and USB Hub
Buy 88 Key USB MIDI Roll Up Piano Electronic Flexible Keyboard Organ Built-in Speaker with Sustain Pedal at affordable prices — free shipping, real reviews with photos — Joom
Buy Novation Launchkey Mini MK3 25 Mini-Key MIDI Keyboard with Sustain Pedal and Knox 4 Port 3.0 USB Hub (3 Items) Online in Hong Kong. B081GFD6K6
Usb Foot Switch Keyboard Fast Control Pedal Hid For Computer Game Desktop Laptop - Buy Foot Controller Pedal Up Down,Electric Foot Pedal Switch,Keyboard Sustain Pedal Product on Alibaba.com
Buy KORG microKEY Air 49-Key Bluetooth MIDI Controller Bundle with Sustain Pedal & Knox Gear 4-Port USB Hub 3 Items Online in Taiwan. B08M67GQ2B
1 Pc USB Universal Foot Sustain Pedal Controller Switch for Musical Piano Electronic Keyboards Accessories| | - AliExpress
M-Audio USB Midisport Uno Portable 1x1 USB MIDI Interface for Mac & PC and Deluxe Accessory Bundle w/ Keyboard Sustain Pedal, Adapter, Dual MIDI Cable, & Fibertique Cloth - Walmart.com
TEControl USB MIDI Pedal Controller interface connect sustain or expression pedal to computer - Audiofanzine
Keyboard sustain pedal, Music & Media, Music Instruments on Carousell
Buy 88 Keys USB MIDI Roll Up Piano Electronic Keyboard Organ Built-in Speaker with Sustain Pedal at affordable prices — free shipping, real reviews with photos — Joom
Control foot switch - FS-8 USB - SUNS - electric / single pedal / 3 pedals
AMS FS310 Sustain/Damper Pedal w/ Switchable Polarity - Xtreme
Using the iOS app
Stagg SUSPED 5 Universal Sustain Pedal for Digital Piano or Keyboard Black SUSPED5 | Shopee Malaysia
Photo4Less | Korg microKEY2-49 Key iOS-Powerable USB MIDI Controller + Sustain Pedal
IWord Electronic Drum Digital USB MIDI 7 Pads Roll Up Set Silicone Electric Drum Pad Built-in Speakers with Drumsticks Sustain Pedal | Alexnld.com
Buy Novation Launchkey 49 MK3 USB MIDI Keyboard Controller (49-Key) Bundle with Sustain Pedal & Keyboard Dust Cover (Medium) Online in Hong Kong. B08S61Z6ZS
Generic USB footswitch - SOS Forum
USB Sustain Pedal @ MSO Studio :: 隨意窩Xuite日誌
USB Foot Pedal | Herga | Herga
MIDI Expression | Footswitch MIDI | Sustain MIDI | MIDI USB Pedal Controller | Usb, Sustain pedals, Music software
DIY PC Footswitch Using a Sustain Pedal - Parts Not Included
Nektar SE61 USB MIDI Keyboard Controller Set
M-Audio SP-1 Sustain Pedal | MIDI Footswitches & Pedals - Store DJ
