The cable works fine, but the adapters are a little underpowered. I made a complaint and the seller very generously replaced them, but even the replacements offered only 800ma and 1000ma, both of which are insufficient to power an x50v/x51v with an extended battery or with wireless on, or with a very low battery.
Also important to consider is that if you also use this as your primary sync/charge cable, you will have the vga cord hanging there whether you like it or not. Other options let you only connect what you need, which I imagine would be convenient.