This product is designed to quickly and easily add 2 external displays or monitors to your computer,Website: , Laptop, Ultrabooks or Macbook from a single USB interface ar resolution up to 2048 x 1152 or 1920 x1200. It delivers smooth, high definition content to multiple displays and can be used in primary, extend and mirror modes. It is a perfect solution enabling you to extend your display across two screens or as alternative displays for your main screenSpecificationModel No.CX00207USB TypeUSB Exteenal GraphicsPortDVI Gold-plated portChipDisplaylink DL-3900Resolution2048 x 1152 or 1920 x1200Frequency1066MHzChip process0.11 micronMaterialAL alloyColorWhite& blackVideo MemoryDDR3SupportUSB 3.0 input,Dual DVI output, DVI to HDMI,DVI to VGAApply toAudio equipment transmission