Plus end-directed microtubule-dependent motor required for spindle assembly and chromosome movement. Has microtubule depolymerization activity (PubMed:17538014). Plays a role in chromosome congression (PubMed:23891108). {ECO:0000269|PubMed:17538014, ECO:0000269|PubMed:23891108}. This is the function of KIF2B (kinesin family member 2B, ENSG00000141200).