Google's deal to sell off the Motorola Home cable box unit to the Arris Group has passed its final regulatory hurdle. The Department of Justice has given the acquisition its approval, and Arris expects the transaction will now close around April 17th. Last December, Google finally found a suitor for the cable box division that was included with its purchase of Motorola Mobility. The news came after months of rumors that the company was looking to sell off the set-top box unit and focus solely on the smartphone and cellphone business. The deal with Arris was for $2.05 billion in cash and $300 million in stock, and it includes a provision to let Arris license Motorola Mobility patents.