Communications Specialties, Inc. (CSI), introduced the Pure Digital Fiberlink 7500 Series fiber optic transmission system for DVI over one fiber. The 7500 Series transmits all single-link DVI resolutions (up to 1920 x 1200), plus stereo audio, over one, single mode non-proprietary fiber, and supports distances up to 15 km. The transmitter features a DVI loop-through for monitor and EDID, and the receiver provides two DVI outputs. The system does not use any compression, scaling or color space conversion and requires no tweaks or adjustments. Units are available in standalone box or rack card versions.