WhAT IS Subpoena duces tecum for deposition?

Subpoena duces tecum is translated as, "Under penalty, produce (or, bring with)" the requested documents or other physical evidence. This request can be used for either depositions or court...

Commands a witness to produce documents or things or both.

A "subpoena duces tecum." directs an individual to come to court and directs that certain items be brought with them. A 'regular' subpoena simply directs the individual to come to court.

You send it to the custodian of the records you want to see.