Fit Laptop Models:ASUS, Averatec, Compaq, Dell, Fujitsu, Gateway, HP , IBM , NEC, Panasonic, Sony, Toshiba
Switchable Voltage Options:
DC15V 6A(MAX),
DC16V 5.6A(MAX),
DC18V or 18.5V 5A(MAX),
DC19V or 19.5V 4.7A(MAX),
DC20V 4.5A(MAX),
DC22V 4.1A(MAX),
DC24V 3.8A(MAX),
DC plug-in Connector: 9 tips
Tip 1 - 4.8mm x 1.7mm (hp/compaq),
Tip 2 - 5.5mm x 1.5mm (Acer),
Tip 3 - 5.5mm x 2.1mm (Acer),
Tip 4 - 5.5mm x 2.5mm (IBM),
Tip 5 - 5.5mm x 2.5mm (Gateway/Toshiba),
Tip 6 - 5.5mm x 3.0mm (Samsung),
Tip 7 - 6.3mm x 3.0mm (Toshiba),
Tip 8 - 6.4mm x 4.4mm (Sony),
Tip 9 - Dell PA-9 model (Dell).
Instruction
1. Please make sure the output voltage your device uses is within 15V to 24V. You can find the output voltage on your laptop or the original ac adaptor that comes with your device.
2. Find the correct connector by trying to plug it in the device. We recommend plugging the connector in the device before it is plugged into the AC Adapter.
3. Select the correct voltage (determined by your laptop) just by simply moving the voltage switch button with your finger.
Price:
Voltage: 100V-240V (AC Input), 24V ( DC Output), 2.65A (Output Current). 
Compatible with Apple Mac MagSafe 85W Power Adapter MacBook Pro MA938LL/A MA357LL/A A1172 A1290 661-4599 661-4832 661-4599 A 1172 A 1290 6614599 6614832 6614599 Mac Book Mag Safe / / / / / / The 85 Watt AC Adapter from PWR+TM is specially designed to meet the power needs of your Apple systems. The adapter enables you to simultaneously operate your system and charge its battery from electrical power outlets in cars. Packed with 85 Watts of power, this lightweight and easy-to-carry plug adapter proves to be an optimized portable power source while on the road.