You can change the lights instantly on a Mac without the Reeflink. Just have to use the USB cable. In your case, it's just a USB wireless bridge. The Vortech update will be nice for different settings on different pumps at different time periods through ESL. For example, low ramp up early morning, low steady until 10am, then reef crest high until 6pm, then back to low steady and ramp down at night. Things the Apex module was supposed to do, but doesn't do very well imo through the basic demos I've seen at LFS.