676T is a high?performance HDMI fiber transmitter for ultra?reach extension of 4K@60Hz (4:4:4) HDMI signals. 676T converts the HDMI and RS?232 input signal to an optical signal that is transmitted over a fiber optic cable to a compatible receiver that converts it back to HDMI and RS?232 signals. 676T includes a multi?mode SFP+ transceiver, but can be used with any Kramer certified SFP+ transceiver, such as a single?mode SFP+ transceiver.