I remember powering two 3.5" 7200rpm from a single firewire port for years. Even a third disk daisy chained from a single port didn't require an external power

I remember powering two 3.5" 7200rpm from a single firewire port for years. Even a third disk daisy chained from a single port didn't require an external power supply. I miss the user experience made possible by the high bus voltage. USB PD is worse.