Monitor with USB connection can be connected only to video board with USB or can be connected to any USB of PC even if the video board does not have USB connection ?
I try to explain what I mean: I see there are some monitor like AOC E1659FWU that uses USB connection. My question is: can I connect the monitor to my tower ?
Not for video by USB. Use a standard vga dvi or HDMI cable. Read my post again. The USB ports on the monitor are just to plug other devices like flashdrives and cameras into.
In other words the monitor comes with a cable that you plug into a usb port on the tower and then you can use the usb ports on the monitor for other usb devices.