Older iPad models have a 30-pin or a Lightning port. iPads of 2010 to 2012 (iPad 13) are required to have a 30-pin cable, and must be connected to a 10W charger and subsequent iPad (iPad 2012 on-up/ iPad 14) are commonly supplied with a Lightning cable, and it can be operated by a 10W or 12W USB adapter. One should always use Apple certified chargers.