The Seagate Stkr4000400 Expansion Desktop 4TB External Hard Drive in black is a high-capacity external drive compatible with laptops, PCs, Macs, and Android devices. With a USB 3.0 interface and 4TB storage capacity, this HDD-only drive offers fast data transfer speeds and ample storage space for all your files. The convenient USB port feature allows for easy connectivity, making it a versatile and reliable storage solution for desktop and mobile users alike.