I219-LM Change Tx/Rx buffer size in Windows 7

Hello,

I am using the newest driver for the Intel I219-LM network adapter in Windows 7. I need to change the size of the receive and
transmit buffers to: 

Receive buffers : 512

Transmit buffers: 128

I can’t seem to find the option to change the parameters !  

For the Intel 82579LM the option is easily available under the “advanced tab” for “network connection properties”.

Any suggestions?

Thanks 

Regards

Jonas