In light of previous reviews, as soon as I opened the box I stuck each one into a breadboard and ran a basic test. I can't say if they meet all specs, but they work in the main modes, at least at close range, with no visible differences from other comparable modules purchased in the past. Also, all the boards I received had QFN ICs on board, none of the epoxy blobs that anyone has supposedly gotten in the past. This allowed me to graft one of the chips onto a custom PCB using a hot air tool, where it worked well.
TRENDnet TC-TP1 Network Signal Testing Probe with Adjustable Volume, Speaker and Compatibility for TC-NT2
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๐ Gigabit Ethernet Media Converter, Single Mode Dual SC Fiber, 1000Base-LX to 10/100/1000Base-Tx, up to 20km, 2-Pack
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MikroTik S+RJ10 Ethernet Transceiver
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12 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
๐ USR-TCP232-410s: RS232/RS485 Serial to Ethernet Adapter/IP Device Server with DHCP/DNS Support
4 Review
๐ CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review