Keurig K400 Brewing System Your Favorites. Your Way. The Keurig 2.0 K400 Brewing System features revolutionary Keurig 2.0 Brewing Technology, designed to read the lid of each K-Cup or K-Carafe pod to brew the perfect beverage every time. The Keurig 2.0 K400 brewer allows you to brew a piping hot 4-cup carafe with the same ease and convenience of brewing a single-serve cup all at the touch of a button. So different than an average coffee maker. Enjoy 500 varieties from 75 brands you love. Compatible with K-Cup Pods, K-Mug Pods, and K-Carafe Pods Large water reservoir Programmable controls Touch-screen