JHA's 19 "3U video converter khib OM1918V yog tsim los mloog OM620 series 1 ~ 8 channel video optical receiver cards.Kev ua si-thiab-plug tsim muab kev yooj yim zoo hauv kev teeb tsa.Nws tuaj yeem tuav 18 daim ntawm 1 ~ 4-ch phaib, lossis 9 daim ntawm 8-ch phaib.