Dear all, The MC3000 has to connect to an USB printer,and the printer is a portable device.The MC3000 acts as a host.I want to use the cable 25-67869-03R or 25-67868-03R . Without power supply, does the MC3000 can communicate with the USB printer normally? (I know the MC3000 can communicate with PC normally via 25-67868-03R without power supply,acts as a client.)  appreciate for your help ! Silver