User's Manual

ASUS B85M-GAMER
1-15
2. Serial port connector (10-1 pin COM)
Thisconnectorisforaserial(COM)port.Connecttheserialportmodulecabletothis
connector,theninstallthemoduletoaslotopeningatthebackofthesystemchassis.
B85M-GAMER
B85M-GAMER Serial port connector
PIN 1
COM
RXD DTR DSR CTS
DCD
TXD
GND
RTS
RI
1.7.2 Internal connectors
1. CPU and chassis fan connectors (4-pin CPU_FAN, CHA_FAN)
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.
Donotforgettoconnectthefancablestothefanconnectors.Insufcientairowinside
thesystemmaydamagethemotherboardcomponents.Thesearenotjumpers!Donot
placejumpercapsonthefanconnectors!TheCPU_FANconnectorsupportsaCPUfanof
maximum1A(12W)fanpower.
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
CHA_FAN
GND
CHA FAN PWR
CHA FAN IN
+5V
B85M-GAMER
B85M-GAMER Fan connectors
Onlythe4-pinCPUfansupporttheASUSFanXpertfeature.
TheCOMmoduleispurchasedseparately.