3.5", USB-A, USB 3 (Gen 1)
Amazon
Seagate Expansion 18TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP18000400)
Antonline
Seagate Expansion STKP18000400 18 TB Desktop Hard Drive - 3.5" External - SATA (SATA/600)
Adorama
Seagate Expansion 18TB USB 3.0 3.5" External Hard Drive
TeciSoft
18Tb Usb3.0 Expansion Desktop,Drive
Dihuni
Seagate STKP18000400 Expansion 18 TB Desktop Hard Drive – External