Compare with RV908T/RV908H, RV908M is with E signal which can supports up to 32 scan mode. One more set network port can be added which can realize two sets network cable and network port hot backup function. The model in stock is with 2 network ports, and you need to make order if you need 4 ports. Key Features: 12 hub75 interface on board(supports 32 scan mode)no extra hub card needed. Supports 12-bit colors input (required the 9th generation sending card). Using18-bit signal processor, maximum support 18-bit (260,000) gray (each of red, green and blue). Single card maximum support 1024x768 pixels. Single card can output 24 groups RGB data. Supports 138 decode, 595 serial decode and so on. Supports pixel-by-pixel brightness and color calibration; single-card color space conversion. High refresh rate and high grey level with most of the driver ICs. Supports general driver ICs and most of the PWM driver ICs. Support hot backup with dual receiver cards for demanding performances screen. Support network cable BER test. Colour: green Material: PCB+plastic Package Contents: 1 * Receiving Card Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.