Because of the general improvements over 2.0 I'd rather buy 3.0 USB cable to transfer files from my PC. I'm using Windows 8.1. There's even USB 3.1. I don't know if the head of the cable will fit my phone's port.
If the phone has only USB 2.0 support, even using a USB 3.0 cable that would fit would give you only USB 2.0 speed. (There can't be a USB 3.0 cable with a "standard connection" any more than there can be a quart bottle that holds a gallon. USB 3.0 uses a different microUSB connector. If it fits your phone it's a microUSB 2.0 connector.)That's what I'm wondering: is there a cable with a standard phone connection?
And yes, my phone only has USB 2.0 support :'(