I just found out today that that RouterOS 4.5 lacks support for the current Intel network interfaces on the market in our Intel motherboard and Intel PCI-e Network cards
P55 Chipset ONBOARD 82578DC Intel (Not Recognized by RouterOS 4.5)
Intel PCI Express x1 PRO 1000 Network Cards EXPI9301CT (Chipset : 82574L) (Not Recognized by RouterOS 4.5)
Unfortunately motherboards these days only come with 1 PCI slot which doesn't have the bandwidth or ability to run multiple gigabit ports, so we are all stuck running older hardware with older pci cards that have supported intel drivers until the Intel drivers are updated in RouterOS.
Intel offers their latest PRO 1000 drivers (version 8.0.18) but they would need to be compiled by Mikrotik.
http://downloadcenter.intel.com/Detail_ ... 0&lang=eng