A hydraulic drive with a flow divider and a bypass wherein fluid can either be allowed to flow from a flow divider to hydraulic actuators in parallel or the fluid can be allowed to bypass the flow divider and flow directly to the hydraulic actuators in parallel. Each power supply in the array is rated to a power delivery capacity that is less than the maximum power draw of the computer system. A drive cam having a plurality of surfaces and positioned on the lead screw engages a plurality of linkage assemblies such that at least two links are driven. The second low pressure is different from the first low pressure.