OS X: Low power alert with USB Devices, USB Keyboard, and USB SuperDrive By Scalper1 | November 6, 2013 0 Comment Scalper1 News An alert may appear when USB devices are connected to your Mac’s keyboard and an Apple USB SuperDrive is attached to the computer: “A USB device needs more power.”Scalper1 News Scalper1 News Related posts: MacBook Pro (Retina, 13-inch, Late 2013): Keyboard and Multi-Touch trackpad may become unresponsive iTunes for Windows: Issues syncing iOS devices with P55 and related Intel Chipsets iCloud: About iCloud Security Code alert messages OS X: About Power Nap