If you connect the two MC200CM to each other with fiber, use force.
Note that you need to power cycle the adapters for changes between force and auto.
In the end, I just went ahead and tried all possible combinations of settings since there are only four: Force-Force, Force-Auto, Auto-Force, and Auto-Auto. None of them got to work with my network DAC. I was aware of the need to power cycle, but I never got any specifics. Does that just mean unplug the power adaptor from the media converts for about 10 seconds and power them back on? I did that each time. I’d unplug the power, make the switch the setting, and then plug back in. Was anything else required?
I appreciate everyone’s feedback so far.
You have to set the one marked with bold to force.
“Be sure the opposite end is using the same setting. When using two converters at the same time, the two converters must be set to FORCE mode.” from page 5
However, if the ethernet port on your Roon Endpoint doesn’t support 1GBitE, it will still not work since it is a Gigabit Ethernet Media Converters.
Could someone please explain why - as mentioned several times - you specifically need Gigabit Media converters for a Gigabit-capable endpoints and 100Mbps Media converters for 100Mbps (max) endpoints?
Surely, as with all other ethernet / switches / endpoints, if the ‘source’ is lower-speed than the ‘destination’ then the destination will either realise, or struggle - but if the ‘source’ is higher-speed-capable than the ‘destination’ then it will throttle…?
Just asking for clarification / understanding / curiosity…
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Cause this particular Media Converters are intended for 1000BASE-SX fiber to 1000Base-T copper media or vice versa so it will not do any auto-speed negotiation.
The The MC100CM media converter converts 100BASE-FX fiber to 100Base-TX copper media or vice versa.
One of it’s features is auto-negotiation of 10/100Mbps and Auto MDI/MDIX for TX port
Alan Langford of DEQX confirmed that my DEQX PreMate Plus is 10/100Mbps, not 1000Mbps. So there’s that.
Ya this was discussed in this older thread below which is why this was the first question I asked (i.e. what is your endpoint and it’s ethernet connection speed) - because I ran into the same issue last year and others have too.
I highly recommend the MC110CS. I went a little ‘extra’ and had the switching regulators with low noise linear and some caps replaced.
Thanks @dabassgoesboomboom. I wish i would have seen that thread before. I should have posted there originally. Will do so now…
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I wondered about that too when I first learned about it.
It seems to me this may be a specific design choice by TP-Link, and is not necessarily generally applicable to other brands of FMC, e.g. Trendnet. However, TP-Link seems more popular for the purpose of Ethernet isolation in the computer audio world, and I have Lumin user setups with them so I know they’re proven to work, despite this limitation.
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Hi Brice –
Here’s what I use in my system: https://www.amazon.com/StarTech-com-Fiber-Ethernet-Converter-MCM110SC2/dp/B002Q0WMWQ/ref=sr_1_4?ie=UTF8&qid=1520307560&sr=8-4&keywords=startech+ethernet+to+fiber-optic
It looks like Sean2016 recommended the same solution.
Steve
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