Macworld At a glanceExpert's Rating ProsAttached rotatable second screenFolds to back of MacBookConsBulky and heavyNiche use casesOur VerdictIf you don’t mind bulking up and weighing down your MacBook, and you have a real need for a foldable, portable second screen, the Dual Laptop Screen Extender may well be your solution. But most people would do better with a separate external display. Best Prices Today: CopGain Dual Laptop Screen Extender Retailer Price $299.99 View Deal Price comparison from over 24,000 stores worldwide MacBooks can quickly and easily hook up to external displays for greater desk-based screen space. While the plain M1/M2 MacBooks support just one extra screen, the 16-inch MacBook Pro (M2 Max) supports up to four monitors. On its own,…