The Toshiba PA3917U-1ACA Laptop ac adapter supplied by our Company are [replacement for] sold for use with certain products of computer manufacturers, and any reference to products or trademarks of such companies is purely for the purpose of identifying the computer manufacturers with which our products may be used.Before ordering this replacement Toshiba PA3917U-1ACA ac adapter, you MUST check your laptop’s input voltage and your original ac adapter’s output voltage. Laptops with 18V-20V input voltage can use our ac adapter which has 19V output voltage; Laptops with 15V-17V input voltage can use our ac adapter which has 16V output voltage; Remember: never exceed ±1V tolerance. Using wrong output voltage adatper will damage your laptop.Please carefully check the plug tip’s size of the adapter to make sure it can fit into your computer. First of all, please make sure that your original Toshiba PA3917U-1ACA adapter’s part number and your laptop’s model number are listed below.Toshiba PA3917U-1ACA Adapter is rated at 19V 3.42A 65W.The high quality laptop charger for toshiba pa3917u-1aca provides your laptop with safe and reliable power.It is over Charge protection, Voltage protection, Temperature protection, Short circuit protection, enjoys 1-Year Warranty,60-Day Money Back!