This picture from Google images implies that the power cord is captured inside the case, that you would need to remove that coverplate in the lower left (philips screwdriver) to install or remove the power cord. https://www.google.com/search?q=Cielo+46+inch+monitor&sxsrf=ACYBGNQQpIsJCQYdMr7wrJt2tzGjOgBShg:1573328939325&tbm=isch&source=iu&ictx=1&fir=hBnndLjhaoKwDM%253A%252C2TT0Hic9AEULUM%252C_&vet=1&usg=AI4_-kQGhtP2OIT2rNWYiGHoFaCg97js6Q&sa=X&ved=2ahUKEwj4_auE893lAhWUpZ4KHSR8Dh8Q9QEwCXoECAkQCQ#imgrc=hBnndLjhaoKwDM:
'course, i don't know if this is your exact model.
Answers & Comments
This picture from Google images implies that the power cord is captured inside the case, that you would need to remove that coverplate in the lower left (philips screwdriver) to install or remove the power cord.
https://www.google.com/search?q=Cielo+46+inch+monitor&sxsrf=ACYBGNQQpIsJCQYdMr7wrJt2tzGjOgBShg:1573328939325&tbm=isch&source=iu&ictx=1&fir=hBnndLjhaoKwDM%253A%252C2TT0Hic9AEULUM%252C_&vet=1&usg=AI4_-kQGhtP2OIT2rNWYiGHoFaCg97js6Q&sa=X&ved=2ahUKEwj4_auE893lAhWUpZ4KHSR8Dh8Q9QEwCXoECAkQCQ#imgrc=hBnndLjhaoKwDM:
'course, i don't know if this is your exact model.