Wake-On Lan

[Jakja]

Hello, I'm trying to enable wake-on lan on my HP Proliant DL380 G6 server. 

I have enabled Wake-On Lan in the bios and installed drivers for my NIC that support WOL.

One problem I am running into is that when I go into device manager  (Network Adapters -> <the NIC> -> Properties   -> Power Manangement)  I don't have the option to check 'Allow this device to wake the computer.'

If anyone could help me I would really apprieatite it. 

My NIC(s): HP NC382i DP Multifunction Gigabit Server Adapater (x4)