i tried the "Wintech USB 2.0 LanCard Model: LAU-15 (CK0049C) successful.
They are working with the mcs7830 driver.
I dont know if the (unmodified) RPi can provide enough power.
On my RPi i shortened both USB-fuses and use an unfused separate power supply/input (5V 1,5A).
Good luck, and