This is an universal 100W AC/DC adapter for popular brand laptop / notebook computers, MP 3, MP4 and digital camera etc which require DC input from 15V,16V,18V,19V,20V,22V, 24V while you are travelling ,even in the car. The adaptor features overload and short circuit protection to protect it from damage.

*100W car power adapter & AC power adapter
*Including 8 connectors for user to change voltage easily
*Different voltage suitable for the most laptops/notebook computers
*New changeable connector design ensures polarity fool proof
*with two USB ports
*Input voltage range: DC11-14V AC110-240V
*Output voltage: DC15V / 16V / 18V / 19V / 20V @5A, 22V / 24V @100 Watts
*USB port DC output voltage: 5V / 1A 
*Output power: 100W(max)
*Efficiency: 85%(typical)
*Overload protection, overheat protection
tips:
Sony: 6.0x1.0mm
Sony: 5.5x1.7mm
Toshiba: 6.3x3.0mm
Acer: 5.5x2.5mm
IBM: 5.5x2.1mm
Asus: 4.8x1.7mm
Asus: 4.0x1.7mm
Sharp: 3.5x1.3mm
Fujitsu: 7.45
Dell + Lenovo: 3.5x1.1mm