Ricoh FAX2050L Advanced Instruction Manuals page 188

Installation
A
Turn off the power switch.
TSTP040N.eps
B
Remove the cover from the front right of the machine.
C
Hold the card in the way shown (pay attention to which side is printed) and
insert it carefully into the slot.
Insert the Memory Card firmly or the machine may not work properly.
TSTM020N.eps
D
Turn the power switch on.
10
108
TSTP040N