The space interface dock is a quick and easy way to transfer cargo around a space borne docking facility while maintaining efficiency and speedy service.
About this creation
The dock itself is made of multiple automated cargo transferring devices that coordinate with other docks and the station itself to ensure the cargo reaches its destination.
Here you can see one of the larger manned cargo transfer shuttles devoid of any cargo pods.
Here is the cargo shuttle receiving a load of cargo
Note: These cargo containers are some of the largest around, normally the cargo barge had dozens of smaller cargo containers on it instead of a few large ones.
And finally a fully loaded cargo shuttle speeds off to its next destination