- Extremely useful
- Useful for wireless transmitters (e.g. Mice).
- USB drives.
- Slow charging of devices.
USB A:
- Splits USB A into 4 USB A ports.
USB C:
- Splits USB C into 3 USB A ports.
One of the uses we use them for, is connecting 2.5 inch SATA drives to a Raspberry Pi computer. Yes we do use USB to SATA adapters.
Runs at USB 2.0 speeds. This is plenty fast enough for most people most of the time.