It is considered one of the storage units except

The answer is: keyboard

Storage units are important components of modern electronic devices, such as computers, because they provide a way to store data and information. These storage units come in different forms, including network attached storage devices, hard disks, and external storage devices. However, computers are a unique form of storage because they are able to provide tasks and objectives quickly and efficiently. This makes it stand out among other types of storage units. Furthermore, computers have evolved significantly over the years in order to keep up with modern requirements, making them an essential component of any electronic device.