Kramer 691 is a high−performance HDBaseT 2.0 fiber transmitter for ultra−reach extension of 4K60Hz (4:2:0) HDMI, USB, Ethernet, RS−232, IR and stereo audio signals over either multi−mode or single−mode fiber optic. 691 converts all input signals into the transmitted HDBaseT 2.0 signal over fiber optics. The extended line receiver, such as Kramer 692, converts the HDBaseT 2.0 signal back to 4K60Hz (4:2:0) HDMI, USB 2.0, Ethernet, RS−232, IR and stereo audio output signals. 691 extends video signals to up to 10km (6.2 miles) over single−mode fiber at up to 4K@60Hz (4:2:0) resolution.