WDM（Windows Driver Mode）驱动程序模型。相比起以前的KDM 和VXD 来说，它的性能更高、系统之间移植更加方便。所以，随着系统的升级（指MS 的操作系统），WDM 已经逐步取代KDM 和VXD，成为MS 系统下驱动程序开发的主流-WDM (Windows Driver Mode) driver model. Compared with the previous KDM and VXD, its higher performance, system between transplantation more convenient. Therefore, as of the upgraded system (referring to MS operating systems), WDM has been gradually replacing KDM and VXD as MS system driver development mainstream