Ordered an ASUS FX504 laptop charger to replace. The original stopped working after about 18 months. I wasn't sure if it was the battery or the charger but I suspected it was most likely the charger and this replacement was a lot cheaper than an Asus replacement so worth a try. My laptop model was listed in the description but I was a bit concerned as the connector on the original is L shaped and this is straight although the diameter on the fitting is the same in the laptop. It fits perfectly and works just as well as the original charger before it stopped working.