Just looked it up because I too was unsure of this. There is a Wall’s meats, but they are no longer related. Unilever owns Wall’s ice cream but they sold off Wall’s meats in 1994. The logos are different and the meats one only operates in the UK. So this map is useless for avoiding dodgy meatballs.
Can confirm. Happened to me with my old laptop. Tried to upgrade it with some rescued RAM and it refused to use all of it. It would only use up to the laptops advertised max.
(Not the brand in question, but motherboards can definitely limit the RAM utilisation)