> 3.6 | Operation on virtual USB port

> This section applies only to Siemens GSM modules equipped with a USB interface.
> To configure the USB interface for use with the WinMux driver the virtual COM port assigned to the module’s USB interface shall be set to max. 115200 bps. To do so, use the Serial Multi plexer Properties page described in Section 2.3. The setting is only needed to open the virtual multiplex channels on the virtual COM port assigned to the USB interface. There is no loss of performance because the virtual baud rate on the USB interface has no influence on the data transfer rate.