NINGKANGSHENG 4k 3X3 video wall controller and player
4k 3X3 video wall controller and player 4K 3x3 HDMI Video Wall Controller USB SD Card HDMI 1.4, HDCP1.4 Compliant | 1 HDMI/DVI Input 9 HDMI OutputTV Video Processor Splicer Upgrade with RS232 Control