Lexikon Buchstabe: U
- UAC (User Account Control)
- Übertaktung
- UDDI (Universal Description Discovery and Integration)
- UDP (User Datagram Protocol)
- UEFI (Unified Extensible Firmware Interface)
- UICC (Universal Integrated Circuit Card)
- Ultrabook
- UMTS (Universal Mobile Telecommunications Service)
- Unicode
- UNIX
- Uplink-Port
- UPnP (Universal Plug and Play)
- Upstream
- Urheberrecht (Copyright)
- URI (Uniform Resource Identifier)
- URL (Uniform Resource Locators)
- URLLC
- USB (Universal Serial Bus)
- USB-Stick
- User Interface
- USSD (Unstructured Supplementary Service Data)
- UTF (Unicode Transformation Format)
- UTM (Unified Threat Management)
- UUID (Universally Unique Identifier)
- UWP (Universal Windows Platform)