Toshiba 4TB Canvio Basic External Hard Drive (HDTB540XK3CA)
goHardDrive.com - TOSHIBA MQ04ABB400 4TB 5400RPM 16MB Cache (15mm, Not for Laptop) 2.5" SATA 6.0Gb/s Internal Hard Drive - 2 Year Warranty
Amazon.com: Toshiba 4TB Canvio Ready – 2.5 inch Portable External Hard Drive with SuperSpeed USB 3.2 Gen 1, Compatible with Microsoft Windows 7, 8 and 10, Black (HDTP340EK3CA) : Electronics