USB expansion storage interface – UGC NET Question

USB provides a universal plug and play interface for many peripheral devices, simplifying connections and power delivery. The acronym stands for universal serial bus, reflecting its goal of replacing multiple legacy ports with a single serial connection standard. This terminology is used in hardware documentation and ICT textbooks. Therefore, universal serial bus correctly completes the expansion.

Option A:
Option A is correct because universal serial bus is the formal name of the USB standard defined by industry consortiums and technical specifications.

Option B:
Option B, unified storage board, narrows the focus to storage and is not a recognised industry term.

Option C:
Option C, universal system bus, sounds plausible but does not match the wording in hardware standards, which clearly state serial.

Option D:
Option D, user service bus, has no established meaning in computer hardware.