Final answer:
The ExpressCard /54 form factor has a width of 54mm and a length of 75mm. It is used for expansion cards in laptops and supports both USB and PCI Express interfaces.
Step-by-step explanation:
The characteristics of the ExpressCard /54 form factor are as follows:
- It has a width of 54mm.
- It has a length of 75mm.
- It is used for expansion cards in laptops.
- It supports both USB and PCI Express interfaces.