The modules I received at the end of November 2019 are version 1.0 and do not support jumbo frames. There is a later iteration with vendor version 2.16 that supports jumbo frames. Apparently the 2.16 versions have been around for a while, so wherever they're coming from, they're really out of date. Mine is coming back, I won't spend $150 on something that doesn't have essential networking features.
🔌 SFP Copper RJ45 Transceiver Gigabit Module 1000Base-T Compatible: Cisco GLC-T/SFP-GE-T, Meraki MA-SFP-1GB-TX, Mikrotik, Ubiquiti, Netgear, D-Link, TP-Link, Broadcom - 100 Reach, 2 Pack
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