Just a note for those who are using HG850a on Unifi 100 package...
Hmm... I'm having both HG850a (TM unit) and also HG8240 which I've bought from AliExpress years ago... the HG8240 has been stored in the store room for few years because I've bought the wrong unit H.248 instead of SIP unit...
Out of curiosity, I hook up HG8240 for speed test and I didn't know I am losing 17Mbps all these while due to 100base port on HG850a
Speedtest as screenshot
Test 1: Unifi 100 w/ HG8240
Test 2: Unifi 100 w/ HG8240
Test 3: Unifi 100 w/ HG8240
Test 4: Unifi 100 w/ HG850a
Test 5: Unifi 100 w/ HG850a
Test 6: Unifi 100 w/ HG850a
Test 7: Unifi 100 w/ HG8240
So as you can see, the DL speed is consistent where i'm losing between 15-18Mbps ...