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TUSB2046B: USB Memory Recognition Fail

Part Number: TUSB2046B


Customer is encountering problem regarding the device. Below is the summary.

1) The mouse and keyboard recognize, but not the USB memory stick.
2) It is recognized when connecting a memory stick by connecting a USB HUB to the outside.

Mouse & Keyboard <--> TUSB2046B <--> Processor : recognize
Memory Stick <--> TUSB2046B <--> Processor : Unrecognizable
Memory Stick <--> USB HUB <--> TUSB2046B <--> Processor :  recognize

Thank you in advance.