@eric But I did note that I've never used Mk3 myself, Mk2 was a Firewire card: https://www.soundonsound.com/reviews/motu-828-mkii I can only guess why they didn't use Thunderbolt for this one: Mk2 was an aging card already and Thunderbolt wasn't widely adopted yet, they decided to play it safe, I'm fairly certain if they revisit this card anytime soon they would go for it. USB did improve, but it always was and will be poor choice for audio 🤷