2 USB devices on one port

I have recently changed how my USB CHPro pedals and Saitek X36 are connected to my PC and now the pedals will not work unless unplugged and then re-connected.I have a bracket with two USB ports which plugs into one USB header on the mo/bo. Into these two ports are plugged my X36 and pedals.The X36 works OK but there is no response from the pedals within FS9 or within the joystick calibration window although the pedals are shown in that window.If I unplug the pedals and then plug them back in they work but I have to do this each time I start the PC.Is this because both controllers are, in effect, using one port or is there something else going on?TIA for any help.