10.5.1 Modular Connector - RJ-45
The ICD Tool uses an RJ-45 modular connector and cable to communicate with a target.
The modular connector pins are always numbered in the same order regardless of connector orientation.
![](GUID-E4C41C1C-A55B-4C20-B784-7AEF136BB437-high.png)
RJ-45 Jack (at ICD Tool) | RJ-45* Connector (at Target) |
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* For information about connecting to an RJ-11 at the target, see Connecting an RJ-11 Type Cable to an RJ-45 Jack on the Debugger. |
Pin numbering can be seen in the following diagram. Although the connectors are oriented differently on the tool and on the target, pin 1 is always pin 1 with relation to the connector.
![](GUID-54C861FD-4590-4A68-84CF-2BC10A4DB675-high.png)