Is the SB19 component a "jumper" (0-Ohm resistor)? On the board itself, some of these are placed, and some aren't, leading me to believe that's what they are. There aren't any 0's on them, though.
EDIT: I put 0-Ohm resistor in parentheses because some people thought I was asking if it was a jumper or 0-Ohm resistor, when I meant that it could be referred to by one name or the other. My bad on the wording.