The UniQue generic replacement ASUS laptop charger suits ASUS notebooks that take a 19V supply through the small 4.0 x 1.35mm barrel connector, used across many VivoBook, ZenBook, X-series, Transformer Book and Chromebook models. Output is 19V at 2.37A, which works out to about 45W (Esquire's listing also quotes 65W, so check your original adapter's rating). Input is a universal 100-240V AC at 50/60Hz, so it runs from South African wall sockets and when travelling. A clover (figure-8) mains cable is included. Esquire lists compatible models such as the ASUS VivoBook S200E/X201E/X202E, ZenBook UX21A/UX31A, Q302 series, X553M, UX303UA, UX305LA, UX301LA and Transformer Book T300LA, but the real check is the connector size and voltage: if your laptop's original charger reads 19V with a 4.0 x 1.35mm tip and 2.37A or less, this is a fit. A low-cost spare for the office or a replacement for a lost charger. Retail box, 6-month warranty.