Samsung Digital Video Recorder SVR-1660C - Manual (Page 54)

Install Manual
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Serial Settings (COM1)
(1) In the OSD menu, navigate to Communication > Serial.
(2) Set the “Serial Number” option to COM1 for text.
(3) Set the Baud Rate/Parity/Stop bit/Data bit options identical to the Input device.
Text Settings
(1) On the OSD menu, select Event Setup > Text.
(2) Set text and relations options.
Some external devices may not be recognized. Please consult your product
distributor prior to installation.
3.3.3.6 USB device connections
The USB ports are mainly used to copy video data to supported external USB storage devices
like USB memory sticks (copies data within an hour).