I really don't care how you connect the power plug.
I do care how your computer is connected to that Motorola box, specifically is there a cable from the Motorola box to your computer. More specifically is it connected into the computer RJ45 jack which looks a bit like a phone socket except it's wider.
All this will actually be answered another way. Please follow these steps exactly.
find an item called "Run", press Enter
In a little textbox that comes up, type "cmd" without the quotes, press Enter
A big black window will open with this sort of information in it:
Microsoft Windows XP [Version 5.1.2600]
© Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\someUserNameHere>
Please, where the cursor is flashing type "ipconfig" then space then "/all" but without any quotes
A description of your connections will come up
In order to post the text here, you need to copy the results like this
On the window top bar, the blue one, right click
Select the Edit menu item, then select "Select all"
All the text will turn white. While the text is so selected,
Once again, select Edit menu item, then select "Copy"
And paste it into your reply to this message.
All this to just determine whether you're using a wired or wireless connection, but it will say few other things which might help if you have problems.