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ATX power supply etc -- Jaycar datasheets --
RJ45, Cross Over and Patch cable Pin Outs DB9 & DB25 Pin Outs
RJ45 Plug pin outs:
MDIX Cross over cable (MDIX - MDIX)
Note: for normal patch cable use the above "Normal" pin outs at both ends of cable.
The RS-232C Interface DB9 and DB25 pin outs:
Common RS232 Connections
Each signal (except ground) is either an input or an output depending whether it is on the Data Terminal Equipment 'DTE' (e.g. a computer terminal) or the Data Circuit Terminating Equipment 'DCE' (e.g. a modem). A typical connection is shown above. ------
When two computer terminals (DTEs) are connected together a 'null modem' hook-up is needed to fool each DTE into thinking that it is connected to DCE. A typical null modem connection is shown above.
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