If you are looking for Information about PSU Clementine, Go check their Wiki
Item storage
From The re-PSUPedia
Item storage is a feature your PM has, which allows you to store things if your Nanotranser gets full and you don't want to sell things.
In an update, an item called Nanotranser X became available in the Variety Shop.
It increases your partner machine's storage by fifty; it can go to the maximum of five hundred.
