NOB Apple - MagSafe 85W Power Adapter MC556LL/B New Open Box - Minor cosmetic blemishes if any Box is a bit distressed Model Compatibility15" and 17" MacBook Pro85-watt power adapterPowers the lithium-polymer battery while the system is off, on or in sleep mode or if a battery is not present.Magnetic DC connectorDisconnects the power cable if it experiences strain.LED indicator lightDisplays charge status.Travel-friendly designDC cable winds neatly around itself for easy cable storage.