That is just how to connect an USB-C in parallel with the USB micro.
And in the USB world there are two types of USB roles, device or host. A mouse is a device. The USB port in the computer or a USB hub is a "host".
Raspberry Pi Pico is a serial device that can also emulate a HID (mouse/keyboard) device or a storage device.
But I haven't seen anywhere that it can be a USB host.
oops.se
That is not in the USB standard.
justdaniel1337
wdym its not the USB standard? Because I want to make a USB Host shield by myself (because dont want to spend money). So I can connect my mouse to pico and redirect that one on my regular pc