What the title says. These monitors have different prices but seemingly identical specs, what is different? Do either have a DisplayPort connection? Is there are way to interpret Acer part numbers to understand what "bir" and "bmirx" actually means? Is there a support number that I can call to ask these questions to Acer customer support (I only see technical support which requires already owning a product)? Thanks all for the help, this has been very frustrating.