Avalue Technology EAX-H81P, User Manual

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User’s Manual
EAX-H81P
User’s Manual
19
2.2 Jumper and Connector List
You can configure your board to match the needs of your application by setting 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 “close” a jumper you connect the pins with the clip.
To “open” 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 two pins.
The jumper settings are schematically depicted in this manual as follows:
A pair of needle-nose pliers may be helpful when working with jumpers.
Connectors on the board are linked to external devices such as hard disk drives, a
keyboard, or floppy drives. In addition, the board has a number of jumpers that allow you to
configure your system to suit your application.
If you have any doubts about the best hardware configuration for your application, contact
your local distributor or sales representative before you make any changes.
The following tables list the function of each of the board
’s jumpers and connectors.
Jumpers
Label Function Note
JRI1/2/3 Serial port 1/2/3 pin9 signal select 3 x 2 header, pitch 2.00mm
JATATX1 AT/ATX Power Mode Select
3 x 1 header, pitch 2.00mm
JCMOS1
Clear CMOS 3 x 1 header, pitch 2.54mm
Connectors
Label Function Note
CPUFAN1 CPU fan connector
4 x 1 wafer, pitch 2.54mm
SYSFAN1
System fan connector 1 (with smart fan
function supported)
4 x 1 wafer, pitch 2.54mm
SYSFAN2 System fan connector 2
3 x 1 wafer, pitch 2.54mm
JFP1
Miscellaneous setting connector 5 x 2 header, pitch 2.54 mm
DIMM1/2 240 PIN DDR3 DIMM socket