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I think the issue here is less about the brands and more about the signaling mismatch.You’ve got QSFP+ (40G) on the MS355 side and SFP28 (25G) on the Ubiquiti USW-Pro-Aggregate side, and those don’t really line up cleanly. The 40G IR4 module is basic...
I usually use fibermania, they can custom as per your requirements, at low qty, a bit expensive but I think it worth it.I ordered several times, it ok.
