This is used and very well loved Kinesis Advantage keyboard. It served me well for 9 years (purchased in 2015) until I upgraded to the new split version of the keyboard. Comes with brand new palm pads (stick onto the keyboard). It is wired (no charging necessary) and has 2 USB ports next to the wire at the top (I loved this feature so that I could plug my mouse USB dongle into that). I never bought a foot pedal but I know that you can with this keyboard.
eBay