Bios Settings; Usb - Siemens SIMATIC HMI IPC677C Operating Instructions Manual

7.7

BIOS settings

The BIOS setting "USB legacy Support" is enabled by default. Thus, the complete
functionality of a USB keyboard is available prior to starting up Windows. You can also
adjust the BIOS settings with the USB keyboard.
Note
To edit the BIOS on an operator device equipped with a touch screen, connect a USB
keyboard.
7.8

USB

Introduction
Commercially available USB peripherals can be easily and flexibly connected via the USB
interface. For example, you can connect an external USB keyboard and a USB mouse. If the
USB keyboard has a USB interface, you can connect other USB peripherals, such as a USB
mouse, directly to the keyboard.
USB interface
There are several types of USB peripherals:
● Low power devices: maximum 100 mA power consumption, e.g. mouse and keyboard
● High power devices: maximum 500 mA power consumption, e.g. hard disk with a
Using USB peripherals
Note
When installing a USB device for the first time, make sure you have the required device
driver.
Before removing an intelligent USB device, deactivate the device in the operating system
using the dialog "Unplug or Eject Hardware". For additional information, refer to the
documentation for the operating system.
SIMATIC HMI IPC677C
Operating Instructions, 04/2013, A5E02722710-04
separate power supply and floppy drive
Note
The general USB specifications apply to the USB interfaces on the computer unit.
The USB interface on the control panel has been approved for a maximum of one
additional USB hub.
Commissioning
7.7 BIOS settings
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