A computer that uses SSD drives and is smaller than a standard notebook is an example of what type of a portable computer?

Subnotebook computer

Explanation:

Since the invention of computers, computers have evolved in performance and physical sizes. Today we have the notebook and netbook computers, otherwise considered as the laptop computer and even more portable computers known as subnotebook computers.

The subnotebook computer is a computer that is smaller in physical size and lighter to the notebook computer but is still as powerful as the notebook PC.

Subnotebook computers have screens that are smaller than 14 inches with a smaller keyboard but have comparable performance rates as notebook computers with larger screens and extended keyboards.

They use SSD (Solid State Drives) which is faster than Hard Disk Drives (HDD) present in most notebook PCs.