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 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¶
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:
SN: 000001 usb-sd-mux-S01-R04-V02-C01 ^^^^^^^^^^ - serial number ^^^^^^^^^^^^^^^ ------------ hardware revision ^^^^^^^^^^ ---------------------------- product identification
Label on the Device¶
The label on the device uses a short form of the identification:
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:
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
During development of the USB-SD-Mux multiple releases have been done. This chapter lists the differences between these versions:
Replaced LEDs with new types.
Intial product release. Re-design to cope with EMC.
Pre-Release. This version has been shipped to some partners for evaluation.