All Cisco Catalyst switches now support PoE+ (30.0w).
However, the minimum standard is PoE (802.3af). Look at the model number. See the "F" and then the "P" at the end? "F" means full power and "P" means PoE.
This means that this 48-port can guarantee PoE (802.3af or 15.4w) to all 48-ports. Should PoE+ (30.0w) is required then it will on a first-come-first-serve-until-full basis. The switch can support a mix power draw of 15.4w or 30.0w until the PoE allowance of 740w is consumed.
Does this help?