What's in this USB cable?
I just got a stereo that can use a USB cable connection. The only USB cable I have is one that came with an old Canon Scanner I have. The USB cable(2.0) has a round cylinder compartment that I can't open on the end of it. The Scanner that it came from had it's own power supply. Is this thing on the USB cord a fuse or some kind of voltage converter?
RF Filter = RF and microwave filter
RF and Microwave filters represent a class of Electronic filters.
The RF Filter is designed to operate on signals in the Medium to Extreme high frequencies.