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R50X receiving card work with HD sending cards Ax, A60x, A30/A30+, Cx5, Cx0，A3, T901/T901B, VP210, VP410
Control range
R500: Recommended 256 * 128, the indoor module with load length appropriately reduced.
R508/R512: Recommended 256 * 256, the indoor module with load length appropriately reduced.
R516/R612: Recommended 256*512, the indoor module with load length appropriately reduced.
1- Gigabit Ethernet port, used to connect the sending card or receiving card, the same two network ports are interchangeable,
2-Power interface, can be accessed with 4.5V ~ 5.5V DC voltage
3-Power interface, can be accessed with 4.5V ~ 5.5V DC voltage；(connect one of them is ok.)
4-Work indicator, D1 flashes to indicate that the control card is running normally; ○4D2 flashes quickly to indicate that Gigabit has been recognized and data is being received.
5-HUB75Eport, connect to the modules
6-Test button,used to test display brightness uniformity and display module flatness
7-External indicator light, run light and data light.