An endosomal sorting complex required for transport and functions downstream of ESCRT I complex. It consists of the class E vacuolar protein sorting (Vps) proteins and is required for the membrane recruitment of ESCRT III complex and binds to ubiquitinated cargoes. [ http://www.ncbi.nlm.nih.gov/pubmed/12892785 http://www.ncbi.nlm.nih.gov/pubmed/12900393 ]