I have an Epson SX400 all-in-one which has a memory card slot for directly printing photos, which works OK. Below that is a USB slot which is apparently for the same purpose. When a memory stick loaded with a photo is inserted the display reads "No memory card or disc inserted". What is this USB port really for?
I would ideally like to use this feature to transfer a typed document directly to printer without using my PC - suppose that not possible as no W.P program present. Can I use the USB port for any purpose?