1). Any one of the 4 sources to any one of the 4 displays. 
2). Seamless switching ensures no switching delay and pictures loss during transitions, the switching speed is less than 1 second. 
3). Support 2x2 video wall mode. 
4). Any one of the four outputs can be turned off independently. 
5). Each port support both HDMI and DVI inputs. 
6). Support high definiton resolutions, including: 1080p@60Hz@36 b/pixels, 1080i, 720p and other standard video formats. 
7). With panel button, Remote Control, RS232 Control, IP Control to select the source. 
8). 1U rack design ,easy installment. 
9). DC 12V 3A power supply. 
10).Unit size:L438XW220XH44mm. 

Input                                          4xHDMI(standard Type A connector) 
Outputs                                      4xHDMI(standard Type A connector) 
Box Dimensions                          495mm[L] x 310mm [W] x 80mm[H]    
Carton Dimensions                      505mm[L] x 425mm [W] x 330mm[H] 
QTY/CTN                                    5 pcs                                                 
Net Weight                                  19.5 kg                                              
Gross Weight                              20 kg