This is a completely redesigned version of the MK802 HDMI Stick. The most stricking difference is that it has a male HDMI connector for plugging straight into a monitor or TV.

It seems that there are at least 2 different case designs for the MK802II. They both share the same innards though.

Identification

Rikomagic mk802ii
Manufacturer	Rikomagic
Dimensions	90mm x 30mm x 13mm
Release Date	September 2012
Website	MK802ii Product Page
Specifications
SoC	A10 @ 1Ghz
DRAM	1GiB DDR3 @ 408MHz
NAND	4GB
Power	DC 5V through a separate USB Mini port
Features
Video	HDMI (Type A - male)
Audio	HDMI
Network	WiFi 802.11 b/g/n (Realtek RTL8188CUS)
Storage	µSD
USB	1 USB2.0 Host, 1 USB2.0 OTG
Headers	UART

In android, under Settings->About Tablet, you will find:

Model Number: Rikomagic MK802II
Build Number: RKM-emg4.0.4IMM76D20121206

Sunxi support

Current status

Supported.

Images

HW-Pack

BSP

Manual build

For building u-boot, use the "mk802ii" target.
The .fex file can be found in sunxi-boards as mk802ii.fex

Everything else is the same as the manual build howto.

Mainline U-Boot

For building mainline u-boot, use the mk802ii_defconfig board name.

Mainline kernel

Use the sun4i-a10-mk802ii.dts device-tree file for the mainline kernel.

Tips, Tricks, Caveats

FEL mode

There is a hole next to the SD slot, under which is the "uboot" button which triggers FEL mode.

Adding a serial port (voids warranty)

MK802ii UART pads

Device disassembly

The bottom cover clips into the top cover, so you need to push the sides of the top cover outwards with your plastic tool. Start at the HDMI connector, as you have some purchase there. The mainboard is clicked into the top cover, and also requires some wriggling to get out.

Locating the UART

There are some minuscule pads on the bottom side of the board, as shown in the picture. You need to have decent soldering skills to be able to attach wires to those. More information is available in the UART howto.