The Seagate Expansion portable drive provides extra storage for your ever-growing collection of files. Instantly add space for more files, consolidate all of your files to a single location, or free up space on your computer's internal drive to help improve performance. Setup is straightforward; simply plug in the included USB cable, and you are ready to go. The drive is automatically recognized by the Windows operating system, so there is no software to install or configure. Saving files is easy too–just drag-and-drop. Take advantage of the data transfer speeds with the USB 3.0 interface by connecting to a SuperSpeed USB 3.0 port. USB 3.0 is backwards compatible with USB 2.0 for additional system compatibility.Features:Easy and simple to use - plug it in and go.file transfers with superspeed USB 3.0.Compatible with USB 3.0 and USB 2.0.Simply plug in the included supply and USB cable.Automatically recognized by Windows operating system, so there is no software to install or configure needed.Drag and drop file saving, right out of the box.Built-in management ensures -saving operation.Please note: Product needs to be reformatted if it is to be used with . Reformatting the drive will erase all content unless it is backed up to another drive.Specifications:Brand: SeagateName: Seagate ExpansionModel: STEA1000400Storage capacity: 500G, 1TB, 2TB, 3TB, 4TB (optional)Connection: USB 3.0Hard drive size: 2.5 inchesMax transfer rate: 120MB/sItem size: 11.7 * 8.0 * 1.48cm / 4.60 * 3.14 * 0.58in (L * W * H)Item weight: 170g / 5.99ozPackage size: 14.5 * 10.5 * 3.2cm / 5.70 * 4.13 * 1.25in (L * W * H)Package weight: 207g / 7.30ozPackage List:1 * Portable hard drive1 * USB 3.0 cable1 * User manual (22 languages)FAQ:The solution for booting a hard disk drives beyond 2.2 TB.Most legacy systems built before 2011 have a traditional PC BIOS. This type of BIOS uses a Master Boot Record (MBR). The MBR Partitions can define a disk drive capacity up to 2.2TB. Windows operating systems that boot from an MBR are therefore limited to 2.2TB per MBR. Such as a 3TB disk drive in a legacy BIOS and Window system will need a DiscWizard device driver to access the full capacity of a 3TB disk drive. Two partitions will be necessary because of the MBR limitation. The device driver mounts the capacity above 2.2TB with another MBR which looks to the system as a second virtual “physical” device.GUID Partition Tables (GPT) can define drives larger than 2.2TB. You can use GPT today on any Windows 10/ 8.1/8/7 and Vista system as a non-booting data drive. Windows can only boot a GPT partition on a new type of BIOS called UEFI.Note: PN codes are "manufacturing batch numbers" , they are not unique. Product packaging, chuck body and accessories PN codes are respectively applied by manufacturer, so they are different.