> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/microarray/general/microarray-general-faq-list/000009652.md).
# Location of the iScan and Tecan Serial Number Stickers
**iScan**
The iScan serial number is printed on a white sticker located on the rear of the instrument, adjacent to the power cord.
**Figure 1:** iScan serial number sticker located on the rear of the instrument.
**Figure 2.** Close up view of the iScan serial number printed above the second barcode and begins with the letter **N**, followed by a sequence of three or four digits.
**Tecan**
The Tecan serial number is printed on a white sticker located inside the instrument, below the syringes (Figure 3).
**Figure 3.** Tecan serial number sticker inside the instrument, located below the syringes (circled in red).
**Figure 4.** Close-up view of the Tecan serial number sticker located inside the instrument, below the syringe assembly. The Tecan serial number is the 10-digit number printed below the barcode.
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| *For any feedback or questions regarding this article (Illumina Knowledge Article #9652), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000009652%20-%20Microarray%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |
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