The nc523sfp is an eight lane x8 pci express pcie 10 gigabit network solution offering superior bandwidth in a proliant ethernet adapter this dual port pci express gen 2 adapter supports sfp small form factor pluggable connectors requiring either direct attach cable dac for copper environments or fiber transceivers and fiber cables for fiber optic environments the nc523sfp ships with advanced server features that proliant customers have come to expect such as support for tcp checks