ASUS may be launching a docking station for the Nexus 7 any minute now, as the accessory is set to become available in early December.

As the ASUS-made Google Nexus 7 is selling like hot cakes, the device manufacturer has raised the stakes with accessories, hoping to further increase sales. The Nexus 7 docking station is the first device of its kind, and will come with a 3,480 Yen price tag, i.e. roughly $40.

Asus has teased its docking station accessory on its Japan Web site, but no information is currently available regarding availability in the rest of the world. The gadget is designed to make it easier for Nexus 7 users to watch movies or browse the Internet, adding extra convenience and functionality.

ASUS' presentation pictures show the Nexus 7 docked in landscape mode, with a 3.5-mm audio port and micro USB port on the back of the unit.

"When using an audio output, it is necessary to connect the USB AC adapter, thereby energizing the docking station at all times," reads the product description on ASUS' Web site. The description also informs potential customers that using the soon-to-be-released docking station will require upgrading the Nexus 7 to Android 4.2 Jelly Bean.

The ASUS docking station for the Nexus 7 is the only unit of its kind to be available with an audio output feature. The product is currently listed as coming in early December, but it seems to have been available for pre-order at some point. The product page states both "Now accepting reservations" and "Reservation has ended."

Other than early December 2012, ASUS offered no precise date for when the accessory will be released. The unit could become available anytime now, as early as tomorrow or next week, just in time for holiday shopping.

The ASUS-made Nexus 7 runs Android Jelly Bean and has a hardware combo that makes an excellent power/price ratio. The device sports a 7-inch display with a resolution of 1,280 x 800, and packs a powerful Nvidia Tegra 3 processor under the hood. The Nexus 7 has proved wildly popular since its launch, and accessories are likely to boost sales even further.