POSIFLEX Business Machines TM4000 Series User Manual
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4. If there is no touch function, please check the connection of the PS/2 Mouse
cable with green connectors (CCBLA-384) or the RS232 cable (CCBLA-
368) for optional RS232 interface touch controller. Please pay particular
attention on whether the PS/2 Mouse cable is connected to the right
connector on TM4000 series or whether the RS232 cable is connected to the
right COM port of PC according to the driver installation.
5. The USB hub function could be disrupted if any current overload of the
down stream USB device occurs. Please turn off the TM4000 series and turn
it back on to reinstate the USB hub. If problem still presents, please
disconnect the down stream USB device and check the current loading of
that USB device.