The document introduces and compares four 12TB external hard drives from Western Digital and Seagate. It provides details on the compatible devices, hardware interfaces, transfer speeds, dimensions, weights, model numbers, prices and other specifications of the WD Easystore 12TB, WD Elements 12TB, WD My Book 12TB, and Seagate Expansion 12TB drives in a table. Based on the comparison, the Western Digital Easystore 12TB is identified as the best storage option among the four due to its competitive price and popularity.