Adapter is commonly used in providing timely and efficient power supply for charging laptops， such as this 3.0 x 1.1mm 19V 65W Power Adapter for Acer Aspire S7-391-6822 (100-240V) in front of you. It will be your best helper when you wish to keep your laptop alive during a long trip or in the office. Thepower adapter can not only provide you with high stability， but also offer effective charging. What’s more， its compact design is made for easy storage and the solid material adopted makes it a durable product for all wise consumers!                                    Features             Low interference and noise<br> Advanced technology and high quality<br> High efficiency and reliability<br> Compact and portable， little space occupied for storage and carrying<br> A durable and well-made laptop power adapter guarantees long term use<br> Allow you to charge your laptop and keep it work whether you’re in the office or working outside <br>                                                            Specifications             Brand     N/A    <br> Type     Laptops    <br> Color     Black    <br> Material     Plastic    <br> Quantity     1 Piece    <br> Compatible Brand     Acerl    <br> Compatible Model     Aspire S7-391-6822 Ultrabook    <br> Tip Diameter     3.0 x 1.1    <br> Input Frequency     50~60fps    <br> Input Voltage     100~240V    <br> Output Current     3.42A    <br> Output Voltage     19V    <br> Dimensions     (4.25 x 1.81 x 1.22)" / (10.8 x 4.6 x 3.1)cm (L x W x H)    <br> Weight     5.82oz / 165g       <br>                                                             Package Includes            1 x Power Adapter<br>1 x AC Power Cable (120cm)<br>