Cintiq Pro 16 + Wacom Link Plus Wacom Liquid Tablet

This is a Wacom Cintiq Pro 16 (DTH-1620/K0) and Wacom Link Plus (ACK42819).
I have used them quite a bit, so they have a significant amount of wear, but I am listing them in hopes of finding a buyer.
Pets: Had small birds until 4 months ago.
Smoking: None at all.

[Wacom Cintiq Pro]
I bought it new and used it for about 7 years.
It basically operates normally, but please only consider purchasing after reading the full product description and understanding the condition.

・I used it without a protective film, so there are scuff marks and cloudiness. These are difficult to capture in photos, so please assume the actual condition has more signs of use than the images suggest.
・There are areas where bright spots appear when displaying dark colors close to black.
　These are too fine to photograph, but they may be noticeable to some.
・While it mostly operates without issue, the video output occasionally becomes unstable.
　This has been present since purchase, but since it was not reproducible, I did not send it for repair.
　I have confirmed that all ports can output video as shown in the photos. (The silver USB is for reference and is not included in the listing.)

Please understand that there may be other scratches, dirt, deterioration due to age, or overlooked issues that I cannot fully describe.

[Wacom Link Plus]
I believe I bought it new and used it for about 3 years.
I have only confirmed HDMI connection. I will include the cable I used, as it was not originally included.
I have never used it with a Mini DisplayPort connection since purchase, so its functionality is unknown.
There are minor scratches from use, but otherwise, I believe it is in good condition.

This is all the information I have. Please ask if you have any questions.