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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.