This is a power bank for any MacBook that has afirst-generation MagSafe connector (see picture above for reference). The cable that connects this power bank to your MacBook actually comes in three parts, allowing you to also use the same cable to plug into a car's "cigarette lighter" power port, and even into an airplane's "EmPower system circular aviation connector or Aviation Plug" port (see picture above for reference). Through this cable, your MacBook can charge at up to 60W! The power bank also has a USB-A port that allows you to charge up to 10W at the same time! The power bank does NOT store the full 100Wh that it originally did; now it only stores 45Wh (see picture above for reference). It charges (via the supplied mains transformer brick) at 30W in about 3.5 hours.