Even though the Samsung UHD 4K Flat Smart TV- JU6000 comes with basic Amazon Video functionality, you still need to use an external device like the Amazon Fire TV Stick if you want to take advantage of the full range of Amazon apps, games, music, and screen mirroring.
The Amazon Fire TV Stick plugs into any HDMI Port and draws power through a USB Micro-B to USB Type-A cable from a USB port on the TV or from an external AC power supply with USB Type-A connector. It also comes with a HDMI extender cable in case you have a wall mounted setup or no space for the Fire TV Stick to plug directly into the TV. Note the Amazon Fire TV Stick only supports HDMI 1.4 and doesn't support 4K resolutions even though the Samsung UHD 4K Flat Smart TV- JU6000 is 4K capable.
Next you need to make sure that your Amazon Fire TV Stick is connected to the Internet. To set up th network, go to Amazon Fire TV Settings -> System -> Network, and select any available WI-FI network.
Once you are connected to the Internet, you can happily browse videos from the Amazon Fire TV Stick to the Samsung 4K TV.
The Amazon Fire TV Stick is also extremely affordable, so if you are looking to spend a lot of time watching Amazon Video on your Samsung UHD 4K Flat Smart TV- JU6000, getting the Fire TV Stick is a no brainer.