.. _product-ident: Product Identification ###################### Depending on the location of the label there are different ways to identify the USB-SD-Mux. The serial number is - regardless of the type of label - constant over all versions. The serial number and hardware revision are also part of the USB identification and can be used to distinguish multiple USB-SD-Muxes connected to one host computer. See :ref:`Reliable Names` for further reference. Label on the Package ==================== The label on the package has changed with the batch in May/2021, therefore you can either find a small label on the front of the packaging or a larger label on the bottom of the packaging. Small Label on the front side ----------------------------- .. figure:: product-identification-label-r01.svg :width: 250 :align: right :alt: small USB-SD-Mux product label layout, which contains the rocket-logo, the company name, the serial number and the hardware release string Example for a small USB-SD-Mux product label .. The following text is unnecessarily long to make sure that the code block flows under the figure above. Otherwise the code block would be too narrow and get a horizontal scroll bar. You can identify the revision of your device by the revision-string on the label on the packaging. An example of such a label is shown on the right. The information on the label is formatted as follows: .. code-block:: none SN: 000001 usb-sd-mux-S01-R04-V02-C01 ^^^^^^^^^^ - serial number ^^^^^^^^^^^^^^^ ------------ hardware revision ^^^^^^^^^^ ---------------------------- product identification Large Label on the bottom side ------------------------------ .. figure:: product-identification-label-r02.svg :width: 250 :align: right :alt: Example of a large USB-SD-Mux product label: It contains the product name, a data-matrix code, the serial number, the product revision string, name and address of the company and the logos for declaration of conformity. Example for a large USB-SD-Mux product label The example serial number ``SN: 00002.00001`` indicates it is the first instance in product class ``00002 (USB-SD-Mux)``. The revision string ``usb_sd_mux-S01-R04-V02-C02`` decodes to: * ``usb_sd_mux`` - Product * ``S01`` - PCBA design * ``R04`` - Device revision * ``V02`` - Assembly variant * ``C02`` - Changes done after product release Label on the Device =================== The label on the device uses a short form of the identification: .. code-block:: none USB-SD-Mux rev. 4 Nr. 0987 ^^^^- Serial number ^^^^^^ ----------- Short form of the revision The short form of the revision can be matched to the long revision as follows: .. code-block:: none Short form Full revision ---------- ------------- [no revision given] usb-sd-mux-S01-R02-V01-C00 rev. 4 usb-sd-mux-S01-R04-V02-C01, usb-sd-mux-S01-R04-V02-C02 Product Changelog ================= During development of the USB-SD-Mux multiple releases have been done. This chapter lists the differences between these versions: .. glossary:: usb-sd-mux-S01-R04-V01-C02 Replaced LEDs with new types. usb-sd-mux-S01-R04-V01-C01 Initial product release. Re-design to cope with EMC. usb-sd-mux-S01-R02-V01-C00 Pre-Release. This version has been shipped to some partners for evaluation.