can you put a link to the exact model
eg

http://raspberrypi.rsdelivers.com/product/rs/pi-bsd/raspberry-pi-type-b-with-8gb-sd-card/7858654.aspx

or

http://raspberrypi.rsdelivers.com/product/raspberry-pi/raspberry-pi-type-b/raspberry-pi-type-b-single-board-computer-512mb/7568308.aspx