First spotted a few days before Christmas, a dock for the Google (Asus-made) Nexus 7 tablet is now available to pre-order with shipments expected Jan. 10.

Google's official store still doesn't mention the dock, but the website B&H has the dock listed for $39.99.

"The black Asus Dock For Nexus 7 is a dock designed to be used with an Asus Nexus 7 tablet," says B&H describing the product. "For easy connectivity, the dock features a micro USB port and 3.5mm audio output."

However, those who want to hook the tablet up to a bigger display will be disappointed to learn that the dock doesn't come with a video output.

The dock is also expected in Europe mid-January, according to the German website, Android World.

There is no word yet as to whether a similar dock will come out for Google's bigger Nexus 10 tablet, although a video released by the company over Christmas appears to show the tablet with its own dock.

Both the Nexus 7 and Nexus 10 were released in November and feature Google's latest Android 4.2.1 Jelly Bean operating system. The devices have been in high-demand and have been out of stock almost as soon as they were released.

Google Play currently lists the 32GB version of the Nexus 7 back in stock, however, with an estimated 3-5 business days shipment date.