A system for adjusting penetration depth settings of seed planting units of anagricultural implement, the system may include a plurality of seed plantingunits and acommon drive assembly. Each of the seed planting units may have a depthadjustment assembly. The common drive assembly may be configured to drive thedepth adjustment assemblies of the plurality of seed planting units so as tosimultaneously adjust a penetration depth setting of each respective seedplanting unit.
