Cosmetically the device is slightly larger than a typical RK3188 stick/dongle. I've included comparison pictures against an RKM MK802IV and a PQ Labs istick A300 (specifically the A350-SSD which is one of the first stick/dongles to include an RJ45 port).
Whatever it is called it is an RK3288 stick/dongle with a built-in RJ45 port. The board is stencilled with T034_V1_20140726 and QL2014.31. It comes installed with Android 4.4.2 (Kernel 3.10.0) which has build number rk3288-eng 4.4.2 KOT49H eng.ant.20140910.191101 test-keys.
Internally the device includes a heat-sink consisting of a thin sheet of metal (aluminium?) painted black on one side and covered in an extremely sticky adhesive on the side that covers the SOC. This certainly works for short periods of heavy usage like running Antutu. With Linux installed the device initially ran idle at around 42 degrees C but heated up to 104 degrees C when under load (running 'stress' with all 4 CPUs at 100% load) when it then crashed after about 10 minutes continuous load.
Comparing the Tronsmart Orion R28 and the Kemico MK802V with both having their case top removed (thereby exposing the respective heat-sinks to the open to help with ambient cooling), the MK802V registered around 5 degrees C higher than the R28. When running a comparison stress test, the R28 had a starting idle temperature of 33 degrees C and the MK802V had a starting idle temperature of 38 degrees C. On running the 'stress' test in parallel on each machine, after a couple of minutes the temperature had climbed to over 50 degrees C on the R28 and over 70 degrees C on the MK802V.
As expected, the temperature continued to climb reaching 65 degrees C on the R28 with the stress test completing successfully, whilst the MK802V climbed to 92 degrees C with the stress test just finished before the device crashed.
By removing the metal heat-sink from the MK802V and adding an external fan it was possible to repeat the stress test with the temperature keeping below the threshold limit for the duration of the test. The highest registered temperature with the MK802V was 83 degrees C (compared with [and running in parallel] the R28 registering only 65 degrees C).
Whilst the temperature findings may prove significant in running the MK802V as a media device under Android, as a basic Linux 'alternative' PC (with known h/w video acceleration limitations) so far it this has not impacted the performance.
An initial Antutu run gave a score of 34703. And whilst it came unrooted it had both Google Play Store and XBMC (13.0-Alpha12Git:20140227-b8512bf [Compiled: Aug 22 2014]) installed.