Installing and Using the 4-Port PoweredUSB Hub
Operations Guide 930103D CyberData Corporation
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Figure 2-11. Cables; +12V PoweredUSB to +12V Power Jack and RS-232 to RS-232
Figure 2-12. Cables; +24V PoweredUSB to 3-Pin Mini-DIN and RS-232 to RS-232 or Parallel to Parallel