it say 2008.3 on power 2 red line
what does 2 red line mean is it broke?
i am looking for software to operate it!
look like serial port connection
what compagnie made this?

16 x 64 led

 

Hi sunnyday, it looks like for this type of sign you can get different driver PCBs for them. You could try get hold of the software from something like this:
https://www.aliexpress.com/item/LED...lgo_pvid=fbc4b462-42d3-4d97-b4c8-6911474f4499

The 2 lines of LEDs could just be what they are currently programmed for. But I guess you can always get a replacement PCB