SBC35-427/BIOS Settings
v1.0
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Page 19
4.3.13 Modular I/O
Configure the WINSYSTEMS Modular IO80 port such as USB 2.0 ports,
PCIe, and SPI.
4.3.14 M.2 E-Key
Configure options for the M.2 Socket such as USB 2.0 ports, PCIe, High
Speed UART, and GPIO.
Feature
Description
Choices
Default
USB Port #2
Enables/disables the USB port. When disabled, any
devices plugged into the connector is not detected by
BIOS or OS.
Enable,
Disable
Enable
USB Port #3
Enables/disables the USB port. When disabled, any
devices plugged into the connector is not detected by
BIOS or OS.
Enable,
Disable
Enable
PCI Express
Root Port 5
Controls the PCIe root port.
•
Auto: Disables unused port automatically for
optimum power savings.
•
Enable: Enables port.
•
Disable: Disables port.
Auto,
Enable,
Disable
Auto
ASPM
Sets Active State Power Management (ASPM), which
provides power savings while otherwise in a fully
active state. L0s mode is for one direction of the link,
usually downstream of the PHY controller. L1 mode is
bidirectional and results in greater power reductions
though with a greater exit latency.
Disable, L0s,
L1, L0sL1,
Auto
Auto
PCIe Speed
Selects the PCIe port speed.
•
Auto matches the speed of the inserted device.
•
Gen1 supports up to 2.5 GigaTransfers per sec-
ond.
•
Gen2 supports up to 5 GigaTransfers per second.
Auto, Gen1,
Gen2
Auto
SPI #2
Controls the SPI interface. Enabled only if there is an
SPI device on an IO80 add-in board.
Enable,
Disable
Disable
Sensor Hub I2C Enables/disables the sensor hub, which offloads
sensor polling and algorithm processing to a
dedicated low-power co-processor.
Enable,
Disable
Disable
Sensor Hub I2C
Speed
Selects the I2C speed. Standard Mode runs at 100 kHz
and Fast Mode runs at 400 kHz.
Standard
Mode, Fast
Mode
Standard
Mode
Feature
Description
Choices
Default
USB Port #4
Enables/disables the USB port. When disabled, any
devices plugged into the connector are not detected
by BIOS or OS.
Enable,
Disable
Enable
PCI Express
Root Port 1
Controls the PCIe root port.
•
Auto: Disables unused port automatically for
optimum power savings.
•
Enable: Enables port.
•
Disable: Disables port.
Auto,
Enable,
Disable
Auto