Final answer:
External hard drives are a widely used mass storage device for home and small business storage. They are portable, compact, and offer large storage capacities.
Step-by-step explanation:
A widely used mass storage device for home and small business storage is an external hard drive. External hard drives are portable, compact, and offer large storage capacities. They connect to a computer via USB and can store a variety of data such as documents, photos, videos, and music.