I’m currently trying. I ordered the Kossel Heatbed Round Alu MK3 Heated Bed for Delta Rostock 3D Printer. (I have the mGiraffe)
I attached the bed to the power block as per the instructions here http://learn.makeblock.com/mgiraffe-3d-printer-kit/
There is a hot bed interface on the right side of the heating resistor interface. If you want to upgrade the hot bed, please upgrade the original 12V/5A power supply in advance. We suggest you use a 12V/10A power adapter or switched-mode power supply.
unfortunately this is not nearly enough information. I did exactly these things but no power comes through that interface and I can’t see where In software menus I can set the temperature or turn it on.