This UniQue generic replacement Dell charger is a 90W-class adapter (19.5V at 4.62A) for Dell notebooks that use the larger 7.4 x 5.0mm "big pin" barrel connector. That connector was standard on Dell business and consumer laptops for many years, so the charger suits a large installed base of Latitude and Inspiron machines. Esquire lists compatibility with the Latitude 3470, 3570, E5270, E5470, E5570, E6440, E6540, E7270 and E7470 and the Inspiron 3520 and 5520 (15R), among others; confirm your original adapter reads 19.5V with a 7.4mm tip before buying. Input is 100-240V AC at 50/60Hz, suitable for South African mains and travel, and a clover (figure-8) mains cable is included. A cost-effective way to replace a worn or lost charger or to keep a second one at the office. Supplied in a retail box with a 6-month warranty.