H

HAN (home area network)

HD-ROM ( high-density read-only memory)

HDA (head disk assembly)

HDD (hard disk drive)

HDTV (high-definition television)

HER (hard error rate)

HFC (hybrid fiber/coax)

HFS (Hierarchical file system)

HID (Human interface device)

HLF (high-level formatting)

HMA (high memory area)

HP (Hewlett-Packard)

HPFS (High performance file system)

HRTF (Head- related transfer function)

HVD (High voltage differential)

Hz (Hertz)