In uk.telecom.mobile Roger Mills wrote:
The *bad* news is that it insists on connecting at 115,200 bps - even
though the dongle always connects at 3.6Mbps.

When I go to Network Connections and look at Properties for the S2 modem,
it's max speed is set at 115,200. It allows me to change it to around 900k
(that's the highest it offers) - but when I re-start the modem, it's back to
115,200 - even after a re-boot.

Most dongles/etc are set up to look like RS232 devices, but they don't
actually send data via RS232. So the baud rate is irrelevant - you'll get
whatever it can do, whether that's 7.2Mbps HSDPA or 9600 bps GSM.

It should only matter if there's a real RS232 connection in there - for
example old Nokias that connect over the RS232-like FBUS or MBUS so the USB
cable really is a USB-RS232 adaptor.

(Being fussy, the voltages are probably wrong to be official RS232, but the
signalling format is the same)

Theo