Unable to unlock 5 slots in map device - Forum

It is possible to upgrade your Map Device to get a fifth slot In order to do so, you need to complete a Non-Valdo's Tier 17 Map It also allows

map section within a Map Stash Tab has 72 item slots as well map device will also increase the item quantity of that map itself

poe how to unlock 5th map slot Just a really quick video showing you how to get a 5 slot map device so you can super juice

poe 5 slot map device now complete T17 map to unlock* How to unlock the 5 slot map device! Poison SRS