First, determine the proper voltage for your device. This may be printed on or molded in the plastic near the power jack on the product. If not, check the instruction manual for the product or contact the manufacturer to determine the correct voltage. If you do not know the required voltage, DO NOT PLUG IN THE ADAPTER, YOU WILL DAMAGE YOUR PRODUCT.
Second, without attaching any of the plug tips to the adapter cord, determine which plug tip from the adapter fits your product by trying each one in the power jack on your product. Sometimes more than one will fit so pick the one that has the best fit. Third, determine the correct polarity for your product. This is usually marked on the product near the power jack. If it is not, check the instruction manual for your product or contact the manufacturer of your product to determine the correct polarity. DO NOT PLUG IN THE ADAPTER IF YOU DO NOT KNOW THE CORRECT POLARITY, YOU WILL DAMAGE YOUR PRODUCT.
If your product has a polarity symbol on it, look for the part of the polarity symbol that is shaped like the letter "C". The open side of the "C" points toward the proper "tip" or "center" polarity.
Please refer to the detailed instructions for setting polarity in the adapter's users manual which can be found here.
Once you are certain that the voltage and polarity are set properly, plug the adapter cord into your product and then plug the adapter into a wall outlet. If your product does not immediately power-up properly when switched on, unplug the adapter from the wall and review all instructions.