Dascom Tally T2150S Quick Start Manual page 10

Installation
90°
6
Insert the top cover supplied with the cut device at an angle
of 90 degrees relative to the printer top side. Be sure to insert
the two tabs on the cover into the recesses provided for this
purpose on the printer. Fold down the top cover.
Place the rear cover at the rear of the printer as shown in the
picture and push it downwards until it is fixed.
Quick start guide