DFI OT951-D series - Manual (Page 12)

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Introduction
USB
The system board supports USB 2.0 and USB 1.1 ports. USB 1.1 supports 12Mb/
second bandwidth while USB 2.0 supports 480Mb/second bandwidth providing a
marked improvement in device transfer speeds between your computer and a
wide range of simultaneously accessible external Plug and Play peripherals.
Wake-On-LAN
This feature allows the network to remotely wake up a Soft Power Down (Soft-
Off) PC. It is supported via the onboard LAN port or via a PCI LAN card that uses
the PCI PME (Power Management Event) signal. However, if your system is in the
Suspend mode, you can power-on the system only through an IRQ or DMA inter-
rupt.
Important:
The 5V_standby power source of your power supply must support
≥720mA.
Wake-On-USB
This function allows you to use a USB keyboard or USB mouse to wake up a sys-
tem from the S3 (STR - Suspend To RAM) state.
Important:
If you are using the Wake-On-USB Keyboard/Mouse function for 2 USB
ports, the 5V_standby power source of your power supply must support
≥1.5A. For 3 or more USB ports, the 5V_standby power source of your
power supply must support ≥2A.
RTC Timer
The RTC installed on the system board allows your system to automatically pow-
er-on on the set date and time.
ACPI STR
The system board is designed to meet the ACPI (Advanced Configuration and
Power Interface) specification. ACPI has energy saving features that enables PCs
to implement Power Management and Plug-and-Play with operating systems that
support OS Direct Power Management. ACPI when enabled in the Power Manage-
ment Setup will allow you to use the Suspend to RAM function.
With the Suspend to RAM function enabled, you can power-off the system at
once by pressing the power button or selecting “Standby” when you shut down
Windows
® without having to go through the sometimes tiresome process of
closing files, applications and operating system. This is because the system is
capable of storing all programs and data files during the entire operating session
into RAM (Random Access Memory) when it powers-off. The operating session
will resume exactly where you left off the next time you power-on the system.