:A client of mine has some Foundry FastIron Edge X424HFs. : :Brocade and Extreme don't seem overly ambitious to help. Brocade EOL'ed those old FESX-4 switches themselves on 03/31/2011, with EOS in 2016. This was before Brocadecom spun off to Extreme. :Anyone have any documentation they can scrounge up? SFP compatibility list? The ones I see in there already look substantially like the ones I get from FiberStore, but that doesn't mean much. Can't help you there, sorry... :Do they still sell support on these? I'm largely just interested in newer firmware for them. I don't think they were updated since they left the factory and there are a few quirks I'm hoping they addressed at some point. Depending on your bother, check out the FESX424-L3U "Layer 3 Upgrade Kit". That particular software piece looks like it gets support for another few months, if I am to believe Brocade's website (which only has the FESX-6 EOL notice, not the older FESX-4 one). http://www.brocade.com/en/backend-content/pdf-page.html?/content/dam/common/... -Mike -- Michael J. O'Connor mjo@dojo.mi.org =--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--= "Take me out... to the black. Tell 'em I ain't comin' back." -Firefly