Apparatuses and methods described herein relate to arm carts for transporting and securing a robotic arm to a surgical table. In some embodiments, an arm cart may include an arm support having two joints that can be manipulated to move an arm into a position in which a coupler of the arm is engageable with a coupling site of a surgical table. In some embodiments, an arm cart may include an arm support that is rotatable and translatable to permit movement of an attachment area for receiving and attaching a coupling site of a surgical table to a coupler attached to an arm. In some embodiments, an arm cart may include an arm support that releasably couples to a middle segment of the arm positioned at least two segments away from an end of the arm having a coupler for coupling to a coupling site of a surgical table.