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ConnectX-4 Lx reports Cable is unplugged with FS.com SFP28-25GLR-31 modules over 40 m OS2
A Mellanox ConnectX-4 Lx (MCX4121A-ACAAx, firmware 14.32.1900) in a Ryzen desktop (Fedora 41 and Windows 10) detected the interface but reported Cable is unplugged with two FS.com SFP28-25GLR-31 modules and a 40 m single-mode LC duplex patch; a MikroTik router recognised the same optics. The poster…
