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Contacting USBmicro


Contacts for USBmicro

Listed below is contact information for USBmicro, L.L.C.

Please send an email to the contact addresses listed below and place "U401", "U421", "U4x1" etc in the message subject line. There is a lot of spam email received and filtered - once in a while a "good" email is the victim of the filter.

USBmicro Products

If you have questions about any USBmicro products, contact " Robert " at usbmicro.com

Engineering⁄ Embedded Design

If you are interested in product design, contact " Robert " at usbmicro.com.

USBmicro designs custom and semi-custom USB devices, embedded web servers, CAN devices, Home Automation devices, and other embedded controllers. We have wide microcontroller experience "from Atmel to Zilog". Contact us for engineering development. Please see the Product Design page.

USBmicro is willing to adapt standard devices, such as the U401⁄U421, with custom software.


Hardware:  U401 USB Interface    U421 USB Interface
Programming:  USBm DLL Programming    Download Files
Application Notes:  U4x1 Application Notes    Misc Applications and Information    FAQ