Riddle number one. When I’m not hooked up you can’t see what you do. My cable ends both can screw and unscrew. What am I?
Riddle number two. I use random letters to determine my speed. I start in the center and branch out like a weed. What am I?
Riddle number three. I don’t move; I don’t speak, but I get the job done. When it comes to my kind, I’m the fastest to run. What am I?