A height adjuster moves a platform along a cart frame, and the platform contacts an alignment stop when the platform is in a loading position on the cart frame. Platform slots are connected to the platform, and the platform slots are sized and shaped to match the size and shape of linear projections of a replaceable printing module. Clamps are sized and shaped to connect to connection points of a printing device and align the cart frame to the printer frame. The platform slots are positioned by the platform to be aligned with housing slots of the printing device when the clamps connect the transport cart to the printing device, and when the platform contacts the alignment stop (and is in the loading position) this allow the replaceable printing module to be transferred between the transport cart and the printing device.