A connector comprising a carriage, an adjustment element, and a base configured to be rigidly attached to a drawer, the carriage is slidably attached to the base, and movement of the adjustment element causes the carriage to slide relative to the base. Also, such a connector further comprising: an engagement element configured to releasably engage a drawer movement guide assembly and attached to the carriage, and/or a wedge element linearly slidable relative to the carriage and configured to cause a change in a spacing between a drawer movement guide assembly and a drawer. Also, a connector comprising an engagement element that is separate from and pivotally attached to a connector assembly, that is configured to be rigidly attached to a drawer, and that is configured to releasably engage a drawer movement guide assembly. Also, systems comprising a connector together with a drawer, a cabinet and/or a drawer guide.