[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] half-height drives hard disk drives (HDDs) 2nd backing up [See backups] choosing/recommended 2nd drive bay arrangements external formatting/partitioning how they work installing 2nd ATA drives preparing for SCSI drives interfaces for IDE/ATA interface recommendations for SCSI interface mounting methods for OEM software and orphaned removable recommendations for spindles ST506 412 upgrading hardware parallel ports and, configuring serial ports and, installing/configuring hardware compression 2nd hat switches HD (High-Density) drive types HDA (head/disk assembly) HDDs [See hard disk drives] head actuator assembly head/disk assembly (HDA) header-pin connectors headphones heatsink/fan units caution with in AMD systems 2nd installing for video adapters HiFD drives (Sony) high-capacity floppy disk drives recommendations for High-Density (HD) drive types High-Voltage Differential SCSI (HVD SCSI) Hitachi displays DVD drives hold-up periods Horizontal Scanning Frequency (HSF) host adapters recommendations for host buses 2nd [See also front-side bus] HSF (Horizontal Scanning Frequency) HVD SCSI (High-Voltage Differential SCSI) hyper-pipelining |