The iPin Laser Presenter is a device that plugs into the iPhones 3.5 mm jack to provide a red presentation laser in the tiniest of form factors. It also works with a free iOS app that allows the user to remotely control their PC or Mac along with presentation slides from their computer by using the iPhone."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips