HD-Q41(USB and serial port RS232) Product typeAsynchronous offline single dual color controller HD-A41Control range Single color:64Height*768width (pixel)Dual color :64*384Tricolor : 32*512Memory2M or 8M (and also can be expanded)Interface2 of hub08 ,4 of hub12Scan mode supporting most modules,1/16,1/8,1/4,1 /2 and static scan, etc..