I recently built a plex server.   Similar.  I used the corsair H110i for it.   The OS I am using, UNRAID, has no software control for the H110i.  So a work around for me was to boot up windows on another drive.  Set the leds, like I wanted them to be and saved it to the H110i.  That way the software control is on the device.  So, in your case, why don't you plug in the CLC-280.  Set it like you want it.  Does it have the ability to save settings to device?  if so, do that and then unplug it and plug in the DG-77 usb header.   It's a work around.  otherwise, you can get a usb PCI card if you have a free slot. 

You can get things like a Y Splitter Cable or an Extension Cable Card or a Header Splitter that should do the trick inexpensively.
 
You can search around more, that's just what I found.

Koithim
I use:
 
https://www.nzxt.com/products/internal-usb-hub
 
Works great.
 
Cheers!

I looked at that at Microcenter today, but it's more than I need and I didn't want to pay that much.
 

bob16314
You can get things like a Y Splitter Cable or an Extension Cable Card or a Header Splitter that should do the trick inexpensively.
 
You can search around more, that's just what I found.

I had found the second one you posted earlier as well. I think that's the one I'm going with. Thanks guys.