MagSafe will work by connecting the power socket to some Mac working with magnets. This can be in lieu of the more standard clasp/socket approach of inserting the cable In the laptop. *Approximated supply dates - opens in a new window or tab consist of seller's dealing with time, https://supplyforsale.ca/product/45w-l-tip-replacement-power-adapter-charger-for-macbook-air-a1244-a1374-a1304-a1369-a1370-a1377-before-2012-model