Page 69 - ARM Based Microcontroller Projects Using MBED

5.2 THE NUCLEO-F411RE DEVELOPMENT BOARD 55
SB13,SB14 SB4,SB6,SB8,SB10 SB3,SB5,SB7,SB9
ST-LINK USART (RESERVED) (DEFAULT)

SB15
ST-LINK SWO
SB11
ST-LINK
SB16 RESET
ST-LINK MCO

SB17
USER button

SB21
USER LED

SB50
ST-LINK MCO

FIG. 5.4 Bottom side of the board. (Used with permission from #STMicroelecronics.)

B2: Reset button
LD1: Red/Green communication LED
The bottom side of board is shown in Fig. 5.4.

5.2.2 The Power Supply

DC power to the board can be supplied using one of the following sources: 5V from the
USB connector, VIN (7–12V), E5V (5V), or +3.3V from power-supply pins on connectors
CN6 or CN7.