This post was really old, I hope he already fixed it
Anyway, if someone needs it, here is the link for reference.
For most cheap chinese boards using WinChipHead CH340G it's this driver on MacOS, it's signed and should at least work on 10.9 (Mavericks), 10.10 (Yosemite), 10.11 (El Capitan):
[
www.wch.cn]
Best regards / Viele Grüße
Till