Data raises an eyebrow at this revelation, but does not seem bothered by it.

"Several," he replies. "I assume that the one closest to my central processing unit will be the most useful to you."

He steps back just enough to give himself room to reach up to the right side of his head, and removes the panel on the side with a click. There is an port meant for some type of cable in the center, but it is possible to observe and scan his circuitry without using it.