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
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):M1:15V/Max90W-6.3*3.0mm
                       M2:16V/Max90W-5.5*2.5mm
                       M3:16V/Max90W-6.5*4.4mm
                       M4:18.5V/Max90W-4.8*1.7mm
                       M5:19V/Max90W-5.5*2.5mm
                       M6:19V/Max90W-5.0*3.0mm
                       M7:19V/Max90W-5.5*2.1mm
                       M8:19.5V/Max90W-6.5*4.4mm 

Photo: