GPU: Sapphire R9 280X Vapor-X Outputs: DVI-D, DVI-I, HDMI, DisplayPort
I have 3 Asus VN248H-P all with 2 HDMI and a VGA input, as well as an Asus PB298Q that has HDMI, DP and DVI-D.
This is how the 3 VN248's are connected
1. HDMI cable to HDMI output
2. VGA cable to VGA/DVI adapter to DVI-I...