You know how annoying it is when you take your laptop off your desk, unplugging it as you go, and your charger cord falls down behind your desk? No? Well I do, and I got sick of fishing my charger out from behind my desk and designed this to hold it at the top. It is designed to fit a MacBook charger cable, but any cable approximately 4mm in diameter should fit fine. The clip is designed to fit 18-19mm desktops.