Table of Contents
Advertisement
3.
CPU and chassis fan connectors (4-pin CPU_FAN1, 4-pin CHA_FAN1~2)
Connect the fan cables to the fan connectors on the motherboard, ensuring
that the black wire of each cable matches the ground pin of the connector.
IMBM-H81B
IMBM-H81B Fan connectors
CAUTION: Do not forget to connect the fan cables to the fan connectors.
Insufficient air flow inside the system may damage the motherboard
components. These are not jumpers! Do not place jumper caps on the fan
connectors!
NOTE: The CPU_FAN connector supports a CPU fan of maximum 12V/2A fan
rating.
4.
BIOS programmable connector (8-pin SPI1)
Use this connector to flash the BIOS ROM.
IMBM-H81B
IMBM-H81B BIOS Programmable connector
Chapter 2: Motherboard information
A
CPU_FAN
A
B
B
CHA_FAN2
CHA_FAN1
GND
C
CHAFANPWR
CHA_FAN_IN
+5V
SPI_1
(NC)
SPI_SI_F
SPI_CLK_F
GND
PIN 1
C
(NC)
SPI_SO_F
SPI_CS0#_F
+V3.3_SPI
2-19
Advertisement
Table of Contents
