What SSD size is commonly utilized inside small laptops?

The commonly utilized SSD size inside small laptops is the 1.8" SSD. This is primarily because the compact nature of small laptops requires storage devices that take up less space, and 1.8" SSDs are designed with smaller dimensions to fit comfortably in these devices. They provide a balance between performance, size, and capacity that is ideal for portable computing environments.

2.5" SSDs are more often found in standard laptops and desktops due to their larger size, while 3.5" SSDs are typically used in tower desktops and servers. The 4.0" SSD isn't a standard size in consumer markets, making it less relevant for any typical laptop configurations. Therefore, the 1.8" SSD is specifically suitable for small laptops due to its capacity to fit into tighter spaces while still offering good performance.