USB Serial Adapter

Does anyone know where I can but the USB serial Adaptor (http://arduino.cc/en/Main/USBSerial) in the UK.

I want to use this to program a Ethernet with POE (http://arduino.cc/en/Main/ArduinoBoardEthernet)

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:- http://store.arduino.cc/eu/index.php?main_page=product_info&cPath=11&products_id=143

Alternatively you can get an FTDI Cable:

http://www.coolcomponents.co.uk/catalog/product_info.php?products_id=356

Thanks.

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