Draco U-Switch
Technical Data
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9
Technical Data
9.1 Interfaces
9.1.1 USB-HID
Our devices with USB-HID interface support a maximum of two devices with USB-HID protocol. Each
USB-HID port provides a maximum current of 100 mA.
Keyboard
Compatible with most USB keyboards. Certain keyboards with additional functions may require custom
firmware to operate. Keyboards with an integral USB Hub (Mac keyboards e.g.) are also supported,
however, a maximum of two devices is supported.
Mouse
Compatible with most 2-button, 3-button and scroll mice.
Other USB-HID devices
The proprietary USB emulation supports certain other USB-HID devices, such as specific touch screens,
graphic tablets, barcode scanners or special keyboards. However, support cannot be guaranteed for every
USB-HID device.
Extension
If it is required to extend the USB-HID signals on CPU or console side (e.g., mounting requirement), the
signals can be extended either via a 3.0 m A-B cable (247-U2) or a 3.0 m USB A-A extension cable
(436-USB20). The compatibility to other extension cables cannot be guaranteed.
Only two USB-HID devices are supported concurrently, such as keyboard and mouse or keyboard and
touch screen. A hub is allowed, but it does not increase the number of devices allowed.
To support other USB 'non-HID' devices, such as scanners, web cams or memory devices, use the
USB 2.0 interfaces.
9.1.2 USB 2.0 (transparent)
The U-Switch with transparent USB 2.0 interface supports all types of USB 2.0 devices (without restriction).
USB 2.0 data transfer is supported with USB high speed (max. 480 Mbit/s).
Each USB embedded port provides a maximum current of 500 mA (high power). When using a USB high
speed interface with 4 USB ports, respectively 2 connectors provide a maximum of 500 mA (high power)
and 2 connectors a maximum of 100 mA.
9.1.3 Mini-USB
This interface enables a customer specified communication with the U-Switch. The firmware could also be
updated using this interface.
9.1.4 GPIO
An external switching solution (dry contact) with up to four buttons, each of which one associated LED can
be connected to this interface. After pressing a button, the corresponding source is switched. The switching
carried out is indicated on the associated LED. E.g., button 1 is assigned to the USB-B port for source 1.
Max. 1.100 mA is supplied at the port for the power supply (pin 3) that is protected by a fuse.
Each other port is limited to a maximum current draw of 170 mA.
