diff --git a/doc/manuals/chapters/firmware.adoc b/doc/manuals/chapters/firmware.adoc
index 1b440bd..5ae5fb1 100644
--- a/doc/manuals/chapters/firmware.adoc
+++ b/doc/manuals/chapters/firmware.adoc
@@ -185,7 +185,8 @@
 activation of both icE1usb ports simultaneously.  The XHCI controller
 firmware erroneously claims that there is insufficient bus bandwidth.
 However, the same icE1usb hardware/firmware works perfectly fine with
-OHCI, UHCI and EHCI host controllers.
+OHCI, UHCI and EHCI host controllers.  See
+https://osmocom.org/projects/e1-t1-adapter/wiki/Isochronous_USB_Issues for a user-maintained list of USB hosts / controllers and whether or not they work with two E1 ports.
 
 As most modern [PC] hardware has XHCI host controllers, you need to
 choose your hardware carefully if concurrent operation of both icE1usb