RJ Palmer on Twitter: "I have used a Razer Tartarus V2 or similar device in my workflow since 2013. I don't know how others can work without something like it, it saves
PC Gaming Keypad - Razer Tartarus Pro
Razer Tartarus V2 RGB Mecha-Membrane Gaming Keypad - Micro Center
Razer Tartarus V2 Gaming Keypad – Santa Cruz Tech Exchange