Specifications:adjust output voltage automatically
1.AC Input:
  Input Votage: AC 110 – 240 V
  Input Current: 1.0A
2.Output voltage: DC15 –20V
3.Output Current:  15，16，18.5，19，19.5V , 20V/4.5A
4.Power:90W
5.USB Port:5V/ 500mA
6.Approvals:CE and ROHS
7   Overload protection     yes
8   Short Circuit Protection  yes    
9   Contain home , car , airplane and USB
10  Connector Size(mm):A:6.3*3.0 B:6.0*1.4 C:5.5*2.5
                                   D:5.5*2.1 E:5.5*1.5 F:5.0*1.4
                                   G:4.8*1.7 H:4.0*1.7