| Abbreviation | Definition |
|---|---|
| WSC | Wi-Fi Simple Configuration |
| WSD | Web Services for Devices |
| WSDAPI | Web Services for Devices Application Programming Interface |
| WSK | WinSock Kernel |
| WUSB | Wireless Universal Serial Bus |
| XA | CD-ROM extended architecture |
| XDDM | Windows XP Display Driver Model |
| XGC | XPS - to - GDI Conversion |
| XID | Transaction IDentification |
| XID | Xicato Intelligent Drivers |
| XPDDM | Windows XP Display Driver Model |
| XPS | XML Paper Specification |
| XQX | Driver for printers that use the HP "XQX" stream wire protocol for their print data |
| XSDT | Extended System Description Table |
| XSP | Extender Session Protocol |
| XUSB | Xbox 360 Universal Serial Bus |
| YDTT | Young Drivers Telematics Trial |
| YRML | You Ruined My Life |
| YWDP | Youth and Women Drivers of Peace |
| ZJS | Zenographics ZjStream printer driver |