From postmarketOS

Device Notes
Google Nexus 4 (lg-mako) Screen-swapped with another, deader Nexus 4
Google Nexus 7 2012 (asus-grouper) Multiple
Next Thing Co. CHIP (ntc-chip) Both CHIP and PocketCHIP units
Nintendo Switch (nintendo-nx) Not modified
PINE64 A64-LTS (pine64-a64lts) Unsure if working
PINE64 PinePhone (pine64-pinephone) 3GB Manjaro variant
Raspberry Pi 1 & 2 (raspberry-pi) Pi1B+ and Pi2; Pi1B+ does not have analogue video or audio output
Raspberry Pi 3 (raspberry-pi3) Multiple 3A, 3B and 3B+ units
Raspberry Pi 4 (raspberry-pi4) 8GB and Pi400 units
Raspberry Pi Zero (raspberry-pi0) 0 and 0W units, inc. one WD Labs PiDrive

I also have the following probably- or definitely-unsupported devices:

  • Amazon Fire TV Stick (original version)
  • ASUS ZenWatch (original)
  • Google Android TV Developer Kit (ADT-2)
  • Google Android Things NXP i.MX7D Starter Kit
  • HTC Hero (A6262?)
  • Lenovo IdeaPad tablet (exact model unknown; Intel-based)
  • Nokia Lumia 820 (no SIM tray)
  • Sony Ericsson Xperia Ray (semc-urushi)