Doctor Who K-9 4 Port Usb Hub Doctor Who K-9 4 Port Usb Hub is an Urban Collector pre-order. From Underground Toys! This Doctor Who USB hub is anything but boring! Recreating the form of the Doctor's robotic companion, K-9, its 4 USB ports are placed at the base robotic dog. Doctor Who K-9 4 Port Usb Hub is a pre-order item. Urban Collector pre-order item policies apply. Secure your new item by pre-ordering today.