Operating instructions

Mounting and connecting
4.3 Connecting the HMI device
MP 377, MP 377 PRO (WinCC flexible)
74 Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0
4.3.8 Connecting a USB device
Below are examples of devices you can connect to the USB port of the HMI device:
● External mouse
● External keyboard
● Printer
● USB memory stick
● Industrial USB Hub 4
Industrial USB hub 4 can be obtained using order number 6AV6671-3AH00-0AX0.
Note when connecting
NOTICE
Functional problem with USB port
If you connect an external device with a 230-V power supply to the USB port without using
an non-insulated installation, you may experience functional problems.
Ensure a non-insulated installation.
Excessive rated load on port
A USB device with too high a power load may possibly cause functional problems.
Observe the values for the maximum load of the USB interface. You will find the values in
the section "
Technical specifications" (Page 284).