Summary: I purchased this card for my free ESXi 6.0 Hypervisor. This card was detected immediately. I am considering purchasing another one for my PC just to have. This card originally cost $500 or more during it's time when it was top of the line.
Summary: Outstanding Device. I coupled this switch with a TP-Link TL-SG2224 Smart Switch and enable LAG/Active LACP. It allows my to have true Teaming and will support large packet sizes. I have four 802.3ad aggregate links on this switch...and it runs great.
Summary: I put one of these in a re-fitted Barracuda Web Filter that I'm using as a Linux-based server. It works quite well, however, beware that Linux won't put the ports in order! You have to figure out which one is which by trial and error.
Summary: Just a super easy install. Added these 4 interfaces to the 2 existing onboard NICs for a total of 6Gibps bonded interface on my FreeNAS. Did not seem to be (trivially) recognized by Windows 7 (tried it briefly before installing into the FreeNAS box) but that's not an issue for me.