I wanted to post this to ensure that everyone understands that there are two types of RS232 codes used on Samsung, depending on your model.
For the ME Series displays, they use RS232C codes [Link: support.justaddpower.com]
For other Samsung models, they use Ex-Link codes[Link: support.justaddpower.com]
The port on the back of the Samsung is the same DB9 Female to 3.5mm Serial Cable.
Samsung Part number AA39-00311A[Link: samsungparts.com]
This one also works:[Link: amazon.com]
At least on my ME Series displays, the port is labeled "RS232C" on the back of the TV.[Link: ibb.co]