Definition, Usage and a list of Quatrain Examples in literature. A quatrain is a verse with four lines, or even a full poem containing four lines, having an independent and separate theme. Often one line consists of alternating rhyme. It exists in a variety of forms.
The other end of the USB cable may have different connectors including USB-B (a square connector commonly used with printers, external hard drives, and larger devices) or smaller connectors such as the Mini-USB and Micro-USB that are commonly used with portable devices such as media players and phones.
However, all USB connectors will have some things in common: 1  Polarization - A USB connector can only nominally be inserted one way. 2  Four contacts - All USB connectors have at least four contacts (although some may have five, and USB 3.0 connectors have even more).