GtGers: I thank you all for your comments but I do not seem to be doing a good job explaining my issue. May I try to restate it?
Can someone please help me find a power device for attaching an external USB-powered audio amplifier to my laptop? (I am unable to work the amplifier by inserting its USB male connector into the USB port on the laptop, as it was intended; apparently the amplifier takes more power than the port can provide.)
The amplifier manufacturer says the device requires 5volts, 500milliamps, and 3watts.
The device I seek needs to plug into a 110volt wall socket and must accept the amplifier power cord connector, a male USB connector. (The signal cord will come from an RCA-type plug inserted into the mic output of the laptop.)
I have been surprised to find how hard it has been to find that simple device over the internet. Companies like Belkin and Logitech seem to offer no help at all.
Can someone please suggest what brand/model I should be buying? I would very much appreciate the help. …. batpark