WR-MM IDC Transition Connectors. 2.54mm staggered pitch (1.27mm pseudo pitch) PCB through hole wire-to-board MiniModule IDC transition connectors for use with ribbon cable with a 1.27mm pitch. These WR-MM series 2.54mm MiniModule transition connectors have a low profile, compact design with a red UL94-V0 PBT body and phosphor bronze contacts with a matte tin over nickel plating.