If you're not sure which model Mac you have, see these articles. The tables below show the style of adapter that comes with each model MacBook, MacBook Pro, and MacBook Air. The idea behind this change was to house the power connection component for the MacBook into a smaller package, which would leave more room for components and also allow for a thinner overall design of the MacBook. The main difference between the two is the appearance, in that the MS 2 connector has a thinner/smaller connecting piece. There are two different types of connector for the Apple MacBook: the MS 1 connector and the MS 2 connector. It should however power and charge your Mac like the adapter that originally came with your computer. Our compatible MS power adapters have two pieces: The connector and adapter, and the AC plug or 'duckhead.' A replacement adapter may not be the same size, color, shape, or wattage as the original adapter that came with your computer. Lower wattage adapters will not provide enough power.
You can use a compatible higher wattage adapter without issue, but it won't make your computer charge faster or operate differently. You should use the appropriate wattage power adapter for your Apple notebook. Power adapters for Apple notebooks are available in 45W, 60W, and 85W varieties. Ultimate Buying Guide In Canada General information Age Specific Birthday Themed Party Supplies
