Question Lian Li Fans, Unihub and BIOS

[jasonbirder]

Apologies if this is a REALLY stupid question...
I've got 10 Unifans connected to my UniHub - 3 banks of 3 (1 on my AIO) and a single. My Lian Li 360 Galahad AIO is connected to the mobo directly through the CPU OPT header.
When I go into BIOS the only "Fan" I see is the CPU OPT (actually the AIO Pump) rolling at c1600RPM...no ther fans are visible.
Their RGB is lit and they are obviously whirring (indeed they look like they're whirring at full speed)
Is this to be expected..or have I connected something wrong...
And if its correct...how do I set a Fan Speed Profile?

 

[Paperdoc]

Two factors to take into account. Start with: every fan generates a speed signal consisting of a series of 5 VDC pulses, 2 per revolution, that it sends back to a mobo header on Pin #3 of the connector / header. The header counts those to display fan speed. It does NOT use that info for its speed control functions, but it does monitor that for failure - that is, no speed signal - so it can warn you when that happens. Now, at the header, it can deal with the speed pulses signal coming in from ONE fan only - two or more superimposed causes huge confusion, false readings, and many errors. So any Splitter, Hub, or external Controller that connects several fans to ONE host header will send back to that header the speed signal from only one of its fans, and ignore all the rest. The ones ignored will never be shown or monitored for failure.

Next, this means that the only way your mobo can tell you any fan's speed is if the fan IS plugged into a fan header to receive that speed signal. If the fan is plugged in anywhere else (and not forwarded by that grouping device) its speed cannot be "seen". For CONTROLLERS with some "smarts" of their own, it is possible (depends entirely on the features designed into that Controller) that it may have its own means of counting pulses from a fan plugged into one of the outputs. But then there also must be some communication system and some software utility running on the computer that can retrieve that info from the Controller and display it for you. The mobo cannot do that by itself. Your Unihub Controller has a cable to a mobo USB2 header for the communication function, and you should be running the Lian Li utility L-Connect 2. That may be able to show you some fan speeds.

If I understand correctly, the Unihub actually has four Controllers in one box, each creating a potential Group of up to four fans connected to one of the Unihub's four ports. I suspect that, in a manner similar to what a mobo port does, each of those Controller output ports can deal with only ONE fan's speed. So you may see ONE speed displayed by L-Connect 2 for each of the ports, but not more. Since there is a cable connecting the Unihub to a mobo 4-pin fan header - you HAVE made this connection, right? - that Hub has access to the PWM signal from that one mobo header and can return to it the speed of ONE fan out of all it has. But whether the L-Connect 2 software actually does those two things through that header connection, I don't know. The Hub and its software are quite capable of doing all the fans need, so it may not use those two abilities, OR they may be options you can choose in L-Connect 2.

Just a small reminder. The speed signal from any fan that is being ignored cannot be monitored automatically for failure, and that is most of your fans. So from time to time YOU should check that all your fans are still working.