An apparatus for selectively connecting an accessory item to a surgical microscope includes a center pivot. An adapter arm includes an adapter support having a substantially planar support body which extends laterally in an outboard direction from the center pivot and has laterally spaced inboard and outboard support regions separated by a laterally oriented centerline. The adapter arm is configured to accept at least a portion of the accessory item in a supporting relationship. An undermount adapter includes a substantially planar undermount body having laterally spaced inboard and outboard body regions separated by a laterally oriented centerline. A plurality of microscope attachment throughholes each throughhole extend through the undermount body. Each throughhole is configured to accept a fastener for securement of the undermount adapter to the surgical microscope. An arm receiver is configured to accept the adapter tongue of the adapter arm in a supporting relationship.