The Trendnet TEG-S80g version 3.0 - 4.1 lack LED speed indicators, with only active (plugin detection) indicators for each port.
|Model/Rev||LED speed indicator||metal jacks||buffer memory (kB)||MAC address table (entries)|
|TEG-S80g Rev 1.0||yes||yes||128||4K|
|TEG-S80g Rev 2.1||yes||yes||128||8K|
|TEG-S80g Rev 3.0||no||no||256||8K|
|TEG-S80g Rev 4.1||no||no||192||4K|
|TEG-S82g Rev 2.0||no||no||256||8K|
The TRENDnet TEG-S80g model has been reliable for me across a decade of use in small instrument networks with challenging physical environments.