Just in case, here is thecompatibility table and the table where auto-negotiation works (under the heading "S-RJ01"): As a result, I bought another 100 megabit transceiver, on which the link is now working
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MikroTik S+RJ10 Ethernet Transceiver
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TRENDnet TC-TP1 Network Signal Testing Probe with Adjustable Volume, Speaker and Compatibility for TC-NT2
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