Intel PCM-3370 - Manual (Page 25)

13 Chapter 2
2.3 Setting Jumpers
You configure your board to match the needs of your application by set-
ting jumpers. A jumper is the simplest kind of electric switch. It consists
of two metal pins and a small metal clip (often protected by a plastic
cover) that slides over the pins to connect them. To ìcloseî a jumper you
connect the pins with the clip. To ìopenî a jumper you remove the clip.
Sometimes a jumper will have three pins, labeled 1, 2, and 3. In this case
you would connect either pins 1 and 2 or 2 and 3.
Figure 2.2: Locating Connectors (Solder Side)
BT1
CN21
DI MM1