This is an updated version of Mylon's "Belt Upgrader" mod. It has simply been updated to work on Factorio 2.1

Full credit goes to Mylon. Their mod is here: https://mods.factorio.com/mod/BeltUpgrader

Belt Upgrader simplifies modernizing the base. Simply make higher tier items available to your logistic network and robots will upgrade your base automatically! For people too lazy to even use an upgrade planner! Belt Upgrader only uses items in excess of one stack so it keeps a few items on hand for use.

Support anything that can be upgraded! If the entity has a higher tier replacement that is hot swappable, this mod will order upgrades!

Upgrade belts!
Upgrade splitters!
Upgrade undergrounds!
Upgrade inserters!
Upgrade assemblers!
Upgrade quality for select entities!

Works with mods!