GPK Systems&reg; 90W Car Adapter for Acer Aspire V Nitro VN7-791G-71P5 VN7-571G-79YU VN7-791G-7484 VN7-791G-78VM VN7-791G-77JJ VN7-791G-76LH VN7-791G-73AW VN7-791G-7939 VN7-591G-75S2 VN7-591G-75NJ VN7-591G-74SK VN7-591G-74LK VN7-591G-70TG VN7-591G-70JY Input: DC 11V - 16V Output:19V 4.74A 90Watt Service & Support 1 year warranty Designed exclusively for use with the laptops 100% compatibility with the original Replacement power supply AC power adapter was tested to match and/or exceed original product at low price.