... lowest voltage (+15V ) after current interruption to protect your laptops/ notebooks 3. Including 12 cinnectors(including 4 option ones) for ... votage easily 4. Different voltage suitable for the most laptops / notebook coputers Auto Switch Universal laptop DC adapter 90W ... batteries and adapters which are compatibled with well-known brand notebooks including: IBM, Sony, Toshiba, HP, Acer, Compaq, DELL, ...