Chapter 1 Product Overview Pass-through connection (Serial) The pass-through connection is a connection in which the computer is connected to the TM printer and cash drawer via the customer display. This is possible only when all equipment is connected in serial, and requires the DP-501 dedicated stand. Computer DM-D500 + DP-501 TM Printer PS-180 1 Power extension cable Serial Serial Data flow in pass-through connection Serial Computer DP-501 TM Printer 15 DM-D500