Universal AC Adapter 15V 16V 18V 18.5V 19V 19.5V 20V 22V 24V 70W Not compatible list(Tip:7.9x5.5mm IBM Lenovo 7.4x5.0mm Dell Latitude Inspiron HP Compaq 7.7x 2.5mm Apple PowerBook Apple iBook 7.9x5.5mm IBM ThinkPad IBM Lenovo 3000 6.0x4.4mm Sony VAIO 4.0x1.75mm HP MINI 6.6x3.0mm Toshiba Satellite) Please check if the item fit your laptop beforre place an order,if you are not sure please note to contact us.The item may not fit some models. Power Max: 90 W Switchable Voltage Options: DC15V / DC16V / DC18V or 18.5V / DC19V or 19.5V / DC20V / DC22V / DC24V. 9 tips: Tip 1--6.4mm x4.4mm (Sony); Tip 2--6.3mm x3.0mm (Toshiba); Tip 3--4.8mm x1.7mm (hp/compaq); Tip 4--5.5mm x2.5mm (IBM); Tip 5--5.5mm x3.0mm (Samsung); Tip 6--PA-6 model (Dell); Tip 7--5.5mm x2.5mm (Gateway/Toshiba); Tip 8--5.5mm x 1.5mm (Acer); Tip 9 (with the adapter) - 5.5mm x 2.1mm (Acer)