Specification: model: us90w2ub power: 90w input: ac 100~240v 1.8a (50-60hz) output: 14.5v / 15v / 16v / 16.5v / 18.5v / 19v / 19.5v / 20v (90w max) usb output: 5v 2.1a (10.5w max) mainbody dimention: 147*70*18mm (l*w*h) net weight: 295g black colour Features: the 18mm-thick ultra slim design. double chipset innovation provides constant true voltage automatically with low consumption. built with overcurrent protection, overvoltage protection, over temperature protection and short circuit protection. innovative connectors design provides required voltages and polarity. more than 30 types of removeable connectors for option, can fit most of laptop/netbook/tablet pc. colourful lcd display show the output voltage and working information. dual 5v 2.1a usb output fit for iphone, ipad, ipod, tablet pc , mobile phones, mp3, mp4, psp, digital camera, gps, etc. Blister package