I bought an 800w GaN USB-C charger from AliExpress (https://www.aliexpress.com/item/1005009093660588.html) and a handful of USB-C to barrel jack adapters. They're powering 2 EliteDesk G2s (35W) and 2 EliteDesk G3s (65W); not had any trouble so far though the GaN charger does run a bit hot (which I resolved by putting a fan under the charger).
Admittedly I can't be sure of the long-term reliability of the GaN charger, but its been running problem-free for over a year now.
Admittedly I can't be sure of the long-term reliability of the GaN charger, but its been running problem-free for over a year now.