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# Using the CME WIDI Jack

The WIDI Jack has a physical switch which sets whether it sends/receives TRS MIDI in the `Type A` or `Type B` setting. This would depend on the type of cable you are using with the WIDI Jack. If it is set to the wrong setting then the WIDI Jack cannot send/receive MIDI correctly.

Using the DIN5 to 2.5mm cables from CME requires the switch to be set to `Type B` because these cables are Type B TRS to DIN5 cables.
![Type B Cables](https://storage.crisp.chat/users/helpdesk/website/e8bd1d589d920800/image_cvdqdt.png =200x200)

Using the 2.5mm to 3.5mm TRS cables from CME requires the switch to be set to `Type A` if you are connecting it to the 3.5mm ports on the MC PRO, which are Type A TRS by design.
![Standard TRS cables](https://storage.crisp.chat/users/helpdesk/website/e8bd1d589d920800/image_1usv125.png =200x200)