This is a 180mm (7") ribbon cable with two 16 pin, 2.54mm (0.1") female connectors on either end.
It can be used to plug onto a 2.54mm (0.1") pin header, like the HDR1X32-M254 for example.
When soldering a pin header to the back of an LCD Character Display, it can be used to connect the LCD to a controller board, as shown in the two pictures below.
|Click to enlarge|
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