Windows Mobile: Install FTDI_SER serial to USB adapter
Sometime you may need additional serial connectors for your windows mobile device. Here is the odyssey I had with a FTDI adapter:
How I installed a FTDI serial to USB adapter within ITC CN50 running Windows Mobile 6.1.
Although the USB to Serial adapters with FTDI chips can be installed with drivers from FTDI, these will not work out of the box with WM6.1.