usage between qnap 451be with addon10g/dual ssd card and arista 10gbe l3 24 port switch over 1m cat7 cable As far as I can tell, sfp worked as advertised. Unfortunately the NAS cannot saturate the link for proper testing, but I have no indication that there are any limitations with sfp. I would definitely buy again if I had to use a 10g-tp connection for the devices (dac and mm fiber is commonly used).
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