After the testing, we have confirmed the conjecture before, the NIC in the Asus motherboard does not isolate the MDI from the frame ground according to the IEEE802.3 requirement. As we said before the power adapter of the TL-SG2210P does not isolate as well and then the incompatible problem happens when they work together. The adapter of the TL-SG2210P and Asus motherboard are both to be blamed for this problem.
We are deeply sorry for that and we have already begin to apply new energy efficiency power adapter which will solve this problem perfectly. Thanks for your understanding in advance!