It does look like mini and Dell calls it Micro or MFF (Micro form factor).  This one for 7050 Micro   [IMAGE] Dell 3050 7050 MFF serial port module interface C4PDJ   ask Dell chat for stock availability and pricing
am i able to add a RS232 PORT (9 PIN)  to a mini optiplex 7050... i just see two I know there is a option for RS232 to USB,  but the CNC machine works better direct and im only see this to connector on the mother board (see attachment )[IMAGE] thanks for the help
mini optiplex 7050 RS232