Xbox One support for external game storage will be introduced in the near future.
Asked whether there'll be a limit to external storage like Xbox 360's 32 GB, he replied: "When I have details on that, I'll let you know."
Hryb also said that he couldn't provide on update on when Microsoft will introduce localised Kinect voice command support in additional countries like Ireland.
"We value all of the feedback we're getting from you," he said. "We know external hard drive storage is another big one on your list, It's on our list too. We're working on that for a future update and will keep you posted."
April's Xbox One update will include new game save features and friend notifications, plus improved Kinect and game DVR functionality.