Samsung OHA 75" 4K Outdoor Commercial Display - Manual (Page 32)

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Before Connecting
Pre-connection Checkpoints
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Before connecting a source device, read the user manual provided with it.
The number and locations of ports on source devices may differ from device to device.
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Do not connect the power cable until all connections are completed.
Connecting the power cable during connection may damage the product.
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Check the types of ports at the back of the product you want to connect.
Connecting and Using a Source Device
Chapter 03