445/405 o-like driver for 1 watt

hi guy how this driver works?isee that the spring is -,there are the 2 bridges for the 2 diode s pins but i see also two bridges for +...how can i set this driver to 1 amp??thanks

here is the link: 1W 445nm blue laser diode driver / 405nm laser driver - eBay (item 360350882508 end time Mar-16-11 13:52:48 PDT)

please help me