> 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/instrumentation/nextseq-500-550/instrumentation-nextseq-500-550-faq-list/000006206.md).
# What do the NextSeq 500/550 status bar colors mean?
The NextSeq 500/550 instrument includes a light-emitting diode (LED) status bar beneath the touch screen monitor. The status bar provides an at-a-glance indication of the instrument state.
* **Green**: ready to sequence
* **Blue**: processing
* **Orange**: needs attention
* **Yellow**: wash is due within the next 24 hours
See the [NextSeq 500 and NextSeq 550 Sequencing System Guide](https://support.illumina.com/downloads/nextseq-500-550-systems-product-documentation.html) for more information.
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