Some of the the APEX motors and Z motors are identical motors. The list includes: 605, 606, 610, 620, 630, 635, and 640 motors. They have identical dimensions, connections and electrical specifications. Any of these motors can be used with either the APEXn0, APEX615n, Z or ZX drives.
The cables for the two series have a very slight difference. They are the same basic cable with the same color codes, but they have different connectors on the end. The Z cables have spade lugs whereas the APEX cables have ferule connectors. They can be used in place of each other; the ferule connectors can still be used where spade lugs are expected.