USB Serial Adapter

Does anyone know where I can but the USB serial Adaptor ( in the UK.

I want to use this to program a Ethernet with POE (

If you look at the top of the page you are looking at you will see a link called "Store" click on that. They ship from Europe into the UK. The actual link is:-

Alternatively you can get an FTDI Cable:


I already have a ftdi cable 3.3v. However this does not work. I think I need the 5v version.