Compatible Models: K53E-XB1 X55C-DS31 A55VD-NS51 X401 X401A X401U X501 X501A X502CA X54C X550CA X551CA X550LA X551MAV X550ZA X75A X55A X55C X53E X53U X44H Q502LA; F555LA K55A K55N K55 K53E K53U K52F K50IJ K60IJ; N56 N56V N56VM N53 N53S N53SV; U56E U46E U47A U52F U57A; A53E A53S A53U A55A S56CA S46CA S56C R510C / Adapter Rating: World Wide 100V ~ 240V 50/60Hz / High Quality PSU/Transformer / All products are tested to exceed/meet standard specification / OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) / FREE SHIPPING BOTH WAYS / 2 YEAR FREE REPLACEMENT WARRANTY