| Abbreviation |
Definition |
| HD |
Hard Drive |
| HDLC |
High-Level Data Link Control |
| HDSET |
Headset |
| HDSL |
High Bit Rate Digital Subcriber Line |
| HDSUB |
Hard Drive Subsystem |
| HDTV |
High Definition Television |
| HDX |
Half-Duplex |
| HE |
Hebrew |
| Headph |
Headphone |
| HH |
Half-Height |
| HNDH |
Handheld |
| HNDSCAN |
Hand Scanner |
| HOST aDPT |
Host Adapter |
| HPGL |
HP Graphics Language |
| HPLUG |
Hot-Pluggable |
| HPUX |
HP UNIX |
| HQ |
High Quality |
| HRES |
High Resolution |
| HS |
High Speed |
| HSHELL |
Hard Shell |
| HSI |
High Speed Interface |
| HSM |
Hierarchical Storage Management |
| HSSI |
High Speed Serial Interface |
| HSTR |
High Speed Token Ring |
| HSWAP |
Hot-Swap |
| HT |
Halftone |
| HTML |
HyperText Markup Language |
| HTTP |
HyperText Transfer Protocol |
| HU |
Hungarian |
| HUB CARD |
Hub Card |
| HUB MOD |
Hub Module |
| HVYWT |
Heavyweight |
| HWIRE |
Hardwire |
| HZ |
Hertz |