In some embodiments, an apparatus can include a cart for a surgical robotic arm having a coupler releasably coupleable to a coupling site on a surgical table. The cart can include a base and a first engagement feature. The base can be freely movably on a support surface between a first location remote from the surgical table and a second location adjacent the surgical table. The first engagement feature can be configured for engagement with a second engagement feature associated with the surgical table such that, when the first engagement feature and the second engagement feature are engaged, the coupler of the robotic arm is disposed in a position in which the coupler of the robotic arm can be engaged by the coupler of the surgical table.
