The CCS Combo 1 (CCS1) connector uses the standard U.S. SAE J1772 plug and inlet for the U.S. 1-phase AC connection. CCS Combo 2 (CCS2) uses the EU-style of plug and inlet for a 3-phase AC connection. Both CC1 and CC2 use the same style connector for DC-powered charging. The CC1 and CC2 plugs and inlets are the same size and shape.