Drivers are posted on the manufacturers website and the chipset makers website:
http://www.tenda.hk/drivers/drivers.html
However, the chipset maker calls it what it really is.... a Realtek RTL8139d chip.
http://www.realtek.com.tw/downloads/...&GetDown=false
Tenda buys the chip from Realtek, puts it on their network card, and disguises the front 2 letters.