USB Passthrough help....

Hey guys, been a while since I've needed to bug you for help! Long story short is I have one of those Razer Black Widow Stealth keyboards with a USB pass through. Today, I used it to plug in a Razer Xbox style controller for my racing games. The controller worked fine after installing the drivers, but the keyboard lights went out and even after unplugging the controller would not come back to life.

Anyone know how to fire the keyboard back up when this happens....apart from shutting down the PC?

Thanks as always!