This is the 13425th most frequent Polish word.
panelem
"Panelem" is the instrumental singular form of "panel," meaning a piece or section, often flat, used in construction or design.
In this sentence, 'panelem' (a declension of 'panel' in instrumental case) refers to a touch-sensitive screen on the TV.
Kupiłem nowy telewizor z dotykowym panelem.
I bought a new TV with a touch panel.
Here, the word 'panelem' could be used if an instrumental usage is required; 'panele' refers to wooden or laminated boards used on floors.
Remont mieszkania zaczęliśmy od wymiany paneli podłogowych.
We started renovating the apartment by replacing the floor panels.
In this context, 'panelem' refers to a group of people participating in a structured discussion during the conference.