Refer the user manual below for troubleshooting
1ft DVI Splitter Cable / 30cm DVI-D Splitter / Y Cable / 1 ft DVI-D to 2x DVI-D Digital Video Splitter Cable M/F
Output one DVI digital video signal to two DVI-D displays simultaneously
Offers 12'' in cable length and removes strain from the DVI-D connectors and reduces the potential of blocking other available ports
This product will split your video signal to deliver two identical images of the same resolution. It cannot be used to span an image across two displays, or to show different images on each display ; Guaranteed reliability with lifetime warranty

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 5 inch
Height : 2.75 inch
Length : 8 inch

Item Weight: 4.8 ounce (View shipping rates and policies)
Shipping Weight: 4.8 ounce (View shipping rates and policies)

ASIN : B00111EMMO