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# SiFive HiFive Unleashed
The SiFive HiFive Unleashed features an FU540-C000 SoC with the U54-MC Core IP.
## Configuring MSEL
The mode select switches should be set as follows:
```
USB LED Mode Select Ethernet
+===|___|==****==+-+-+-+-+-+-+=================|******|===+
| | | | |X|X|X| | | |
| | | | | | | | | | |
| HFXSEL->|X|X|X| | | | |______| |
| +-+-+-+-+-+-+ |
| RTCSEL-----/ 0 1 2 3 <--MSEL |
| |
```
This will cause the board to boot from the SPI flash at 0x2000\_0000.
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