H-MUX

Hybrid MUltipleXer (org/ansi/fddi)

H/B/I

Host, Border router, Interior router (people/vdmeer-sven/lcn)

H2020

Horizon 2020 (org/eu)

HA

Hearing Aid Compatibility (org/atis)

HAN

Home Area Network (ict/net)

HAND

Have A Nice Day (jargon)

HAP

Host Access Protocol (org/ietf)

HBA

Host Bus Adapter (ict/comp/hdd/scsi)

HbbTV

Hybrid Broadcast Broadband TV (org)

HCI

Host Controller Interface (ict/os/linux)

HD

High Definition (ict/graphic)

HDCP

High-bandwidth Digital Copy Protection (ict/security)

HDD

Hard Disk Drive (ict/comp)

HDMI

High Definition Multimedia Interface (ict/comp)

HEA

Higher Education Authority (org)

HEC

Header Error Control (org/itu/atm)

HEMS

High-level Entity Management System (org/ietf/snmp)

HetNets

Heterogeneous Networks (ict/net)

HF

Have Fun (jargon)

HGI

Home Gateway Initiative (org)

HI1

Handover Interface 1 (org/etsi)

HI2

Handover Interface 2 (org/etsi)

HI3

Handover Interface 3 (org/etsi)

HISAM

Hierarchical Indexed Sequential Access Method (ict/comp/hdd)

HMAC

keyed-Hashing for Message AuthentiCation (org/ietf)

HMP

Host Monitoring Protocol (org/ietf/snmp)

HNET

Home Networking Forum (org/atis)

HP

Hewlett Packard (com/us)

HPR

High Performance Routing (ict/net)

HRC

Hybrid Ring Control (org/ansi/fddi)

HS

High Speed (ict/device/modem)

HSSG

Higher Speed Study Group (org/ieee)

HSSN

HighSpeed Switching Network (org/itu/atm)

HST

High Soft Tech (org/itu/isdn)

HT

Hyper-Threading (ict/comp/cpu)

HT

Horizontal Tab (org/ansi/ascii)

HTC

Hardware Thermal Controller (ict/comp/cpu)

HTH

Hope This Helps (jargon)

HTML

HyperText Markup Language (org/ietf/www)

HTML

Hyper Text Markup Language (org/w3c)

HTML5

Hyper Text Markup Language 5 (org/w3c)

HTTP

Hyper Text Transfer Protocol (org/ietf/www)

HUB

Humboldt-Universität zu Berlin (edu/de)

HVD

High Voltage Differential (ict/comp/hdd/scsi)

HW

Hardware (ict)

HYCH

Hope You Can Help (jargon)