一般情况下，计算机在开机时会由UEFI（Unified Extensible Firmware Interface）固件与IOMMU（Input–Output Memory Management Unit）先行创建基本防护，避免支持直接内存访问（Di ...

The What: Extron has announced the immediate availability of the XTP II CP 4i HD DMA 4K PLUS, an XTP input board that provides four HDMI inputs with multi-channel audio downmixing and stereo audio ...