IEI Technology PCIE-Q870-i2, User Manual

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PCIE-Q870-i2 PICMG 1.3 CPU Card
Page 57
4.3.6 USB Power Selection
The USB power selection is made through the BIOS menu in “Chipset
Æ
PCH-IO
Configuration”. Use the USB SW1 Power and the USB SW2 Power BIOS options to
configure the correspondent USB ports (see Table 4-5 ) and refer to Table 4-6 to select
the USB power source.
BIOS Options Configured USB Ports
USB SW1 Power
CN5 (external USB 3.0 port)
CN6 (external USB 3.0 port)
USB SW2 Power
USB1 (internal USB 2.0 ports)
USB2 (internal USB 2.0 ports)
CN7 (internal USB 3.0 ports)
Table 4-5: BIOS Options and Configured USB Ports
Options Description
+5V DUAL +5V dual (default)
+5V +5V
Table 4-6: USB Power Source Setup
Please refer to Section 5.4.1 for detailed information.
4.4 Chassis Installation
4.4.1 Airflow
WARNING:
Airflow is critical to the cooling of the CPU and other onboard
components. The chassis in which the PCIE-Q870-i2 must have air
vents to allow cool air to move into the system and hot air to move out.
The PCIE-Q870-i2 must be installed in a chassis with ventilation holes on the sides
allowing airflow to travel through the heat sink surface. In a system with an individual
power supply unit, the cooling fan of a power supply can also help generate airflow
through the board surface.