![MSC Technologies Avnet COM Express CXC-BT User Manual Download Page 35](http://html1.mh-extra.com/html/msc-technologies/avnet-com-express-cxc-bt/avnet-com-express-cxc-bt_user-manual_1846822035.webp)
MSC CXC-BT
User Manual
35 / 84
JUMPERS AND CONNECTORS
3.1 Jumpers
There are four jumpers available on the module:
-
RTC Reset:By shorting the pins of this jumper, the RTC Clock is reset and the values of
the CMOS NV-RAM are cleared. This jumper is only functional in systems with battery at
RTC power supply. The main power must be switched off before shorting the jumper.
Switch off the main power before shorting the jumper.
-
BIOS Default: By shorting the pins of this jumper during boot, the values of the BIOS
setup will be reset to default values.
-
BIOS Recovery: By shorting the pins of this jumper during boot the system is forced into
crisis recovery mode. For more information see chapter
These jumpers are located at the top side of the board at the border.
3.2 Fan Connector
The fan connector is located on the top side of the CPU module, directly beneath the CPU:
The following connector type is used:
JST S4B-PH-SM4-TB
The fan itself should be equipped with a JST PHR-4 connector and one of the following contact types:
SPH-002T-P0.5S (AWG# 30-24), SPH-002T-P0.5L (AWG# 28-24) or SPH-004T-P0.5S (AWG#
32-28)
The pinning is as following (numbering from right to left):
Pin
Signal
Description
1
GND
GND
2
V12FAN
+12V fan supply voltage.
BIOS Default
BIOS Recovery
RTC Reset
Fan
Connector