Guys, I had to wait for my registration to be validated, but good news for you.
HP released a new BIOS dated October 2013 that fixes the onboard NIC issue. I have been successfully running it in a N36L with Windows 8.1 Pro and a N40L with Windows Server 2012 R2 for nearly two weeks now.
This BIOS does not contain the hack to allow the ODD and eSata to run at full speed, but unless you really need them (eg SSD in ODD), then it works fine.
There is also one report on Homeservershow from Germany of a successful hack of this version, but if you go to the original German thread, you can see a few other users saying it is OK as well.
Its probably OK, but as I dont use a SSD in the ODD slot, I have decided to wait until a few more reports come in.
Have a look at Post #143 and later for details at the following Homeservershow link.
http://homeservershow.com/forums/in...sentials-on-a-microserver-n36ln40ln54l/page-8