Eheim, makers of professional aquarium filters has updated their popular 3e canister filters. What is the update you ask? How about a little USB action? This additional USB port allows you to upgrade the software and functionality of the 3e canister filter. You remember the Fluval G series filters? Much the same as those that have software running the pumps so to with the new Eheim 3e canister filters. Eheim isn’t saying much of what the additional USB functionality will do, just that it has it. Which is fine by us. Also we would suspect that it will be for PC only, so sorry mac fans it looks like you’ll be left out in the dark.