6.1.3 Drivers
Before connecting the STM32H7B3I-EVAL board to a Windows PC via USB, the user must install a driver for the
STLINK-V3E (not required for Windows 10). It is available on the www.st.com website.
In case the STM32H7B3I-EVAL board is connected to the PC before the driver is installed, some STM32H7B3I-
EVAL interfaces may be declared as “Unknown” in the PC device manager. In this case, the user must install the
dedicated driver files, and update the driver of the connected device from the device manager as shown in
Figure 4.
Note: Prefer using the USB Composite Device handle for a full recovery.
Figure 4. USB composite device
Note: 37xx:
• 374E for STLINK-V3E without bridges functions
• 374F for STLINK-V3E with bridges functions
6.1.4 STLINK-V3E firmware upgrade
The STLINK-V3E embeds a firmware upgrade mechanism for in-situ upgrades through the USB port. As the
firmware may evolve during the lifetime of the STLINK-V3E product (For example new functionalities, bug fixes,
support for new microcontroller families), it is recommended to visit the www.st.com website before starting to use
the STM32H7B3I-EVAL Evaluation board and periodically, to stay up-to-date with the latest firmware version.
6.1.5 Interface
STLINK-V3E programming connector CN25
The connector CN21 is used only for embedded STLINK-V3E programming during board manufacturing. It is not
populated by default and not for the end-user.
STLINK-V3E USB Type B connector CN21
The USB Micro-B connector CN21 is used to connect embedded STLINK-V3E to PC for debugging of the board.
UM2662
Embedded STLINK-V3E
UM2662 - Rev 1
page 10/95
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