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Does the architecture of the Compute Module (when mounted in a Compute Module IO Board) support simultaneous USB host and device/client port operation? This post suggests that a BeagleBlack Bone board is more suitable (because previous RPi only allowed host or device, but not both at the same time).

As a simple experiment, I tried connecting the USB host port to the slave port on the CMIO board (via a hub that also had a wi-fi adapter)-- this seemed to disrupt the entire USB (disconnecting all devices) until the slave port was disconnected.

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jhfrontz
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No it does not unfortunately. The client mode is only used when flashing the eMMC with a new image. When Linux has booted normally there is USB hos only.

Ronny Nilsson
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