The two USB ports found on many monitors are not just for data transfer; they typically work as a built-in hub. That lets users plug accessories directly into the monitor rather than occupying ports on the computer itself. For business desks, this can mean less cable clutter and easier access when swapping devices.
In practice, the ports are most useful for low-power peripherals like a mouse, keyboard, or headset. The Engadget article notes that keeping these connected to the monitor allows a laptop to be docked or undocked with a single cable, which is handy in shared workspaces.
Heavier devices, such as external hard drives or fast-charging phones, may still need a direct connection to the computer or a powered hub. The monitor's built-in hub is designed for convenience, not for high-current loads, so users should match the accessory to the right port.