The ZIO Qwiic Booster is a breakout for the Linear Technology LTC4311.

The
LTC4311 is a low-voltage I2C bus accelerator, dramatically reducing the
transition times of the SDA and SCL signals, and enabling reliable
operation of I2C interconnects over much longer cable runs than normally
possible.

If you need to place your Qwiic sensor or actuator
driver more than a couple of meters away from your MCU, consider using
this board to ensure reliable operation. If you use Qwiic boards, or any
I2C boards for that matter, in your interactive installations or other
experimental hardware builds, we highly recommend having at least one of
these little life-savers in your box of tricks.