Owner's manual

NOVA-HM551 5.25" SBC
Page 54
4.5 Jumper Settings
NOTE:
A jumper is a metal bridge used to close an
electrical circuit. It consists of two or three metal
pins and a small metal clip (often protected by a
plastic cover) that slides over the pins to connect
them. To CLOSE/SHORT a jumper means
connecting the pins of the jumper with the plastic
clip and to OPEN a jumper means removing the
plastic clip from a jumper.
Figure 4-5: Jumper Locations
Before the NOVA-HM551 is installed in the system, the jumpers must be set in
accordance with the desired configuration. The jumpers on the NOVA-HM551 are listed in
6Table 4-1.
Description Type Label
AT/ATX power mode setting 3-pin header J_ATXCTL1
Clear CMOS 3-pin header J_CMOS1
COM5 RS-232/422/485 select 8-pin header JP4
COM6 RS-232/422/485 select 8-pin header JP5
LVDS LCD voltage select 3-pin header J_VLVDS1
LVDS panel resolution select 8-pin header J_PID1
PCI-104 and VIO voltage select 3-pin header JP6
Table 4-1: Jumpers