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Seagate STCA2000100 2TB Backup Plus Desktop External Hard Drive — main product image
Seagate

Seagate STCA2000100 2TB Backup Plus Desktop External Hard Drive

★★★★★4.3 (2567 reviews)
USB 3.0

Two terabytes of USB 3.0-connected backup storage with cross-platform Mac/PC compatibility and social media archiving baked into the Seagate Dashboard software.

$249.99*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Seagate Backup Plus Desktop STCA2000100 is a 2TB external hard drive built around a 3.5" HDD mechanism connected over USB 3.0. The 2TB capacity figure is formatted — actual usable space will be approximately 1.81TB after the file system overhead. USB 3.0's 5Gbps theoretical bandwidth is the ceiling; real-world sequential throughput on a typical 7200 RPM desktop HDD lands between 100 and 130 MB/s. That's fast enough to move 100GB in roughly 15 minutes — meaningful for large media archives or full system image backups where USB 2.0 would have taken an hour or more. The NTFS formatting and included Mac NTFS driver allow the drive to function as a shared volume between Windows and macOS machines without the performance penalty of exFAT or the compatibility gaps of HFS+.

The target user is anyone running a desktop backup strategy who needs substantial local storage capacity at a cost-per-terabyte that solid-state alternatives can't match at this price tier. It fits cleanly into a home office or small production environment as a primary local backup destination, a media archive drive, or a cross-platform shared storage volume between a Windows desktop and a Mac. The Seagate Dashboard software extends that use case to social media archiving — pulling your Facebook, Flickr, or YouTube content down to local storage — which has value as cloud platforms change terms or become inaccessible. Power users who want more control typically replace Dashboard with dedicated backup software, but the hardware itself remains the reliable constant in that equation.

Key Features

Keep copies of your precious digital files, in case disaster strikes

Impressive 2 TB storage capacity

Save feature enables user-generated content to be backed up from your favorite social network

Share feature allows multiple files to be uploaded to social networks at once from your computer

Install the pre-loaded NTFS driver for Mac and use the drive interchangeably between PC and Mac computers without reformatting

Features USB 3.0 for quick data transfer rates; upgrade to Thunderbolt technology or FireWire 800 with the available additional adapter

The available storage capacity may vary.

Specifications

Capacity
2 TB
Interface
USB 3.0
Compatibility
PC and Mac (with pre-loaded NTFS driver for Mac)
Features
Save and Share social network integration
Upgrade Options
Thunderbolt technology or FireWire 800 (with additional adapter)

Pros & Cons

👍 Pros

  • 2TB on a single desktop drive provides substantial local backup capacity for full-system images, media libraries, or multi-year archive accumulation
  • USB 3.0 interface delivers up to 5Gbps theoretical bandwidth, making large sequential backup jobs significantly faster than USB 2.0-era drives
  • Pre-loaded NTFS driver for Mac enables genuine cross-platform read/write use without reformatting or purchasing third-party software
  • Seagate Dashboard's social media backup feature provides an automated path to archive cloud-hosted content locally
  • Optional adapter expansion to Thunderbolt and FireWire 800 provides forward flexibility for workstations with those interfaces

👎 Cons

  • Desktop form factor requires AC power — not portable, and adds a cable and power brick to any deployment location
  • Ships formatted as NTFS; Mac users must install the pre-loaded driver before write access works, which adds a setup step not all users anticipate
  • Rotating magnetic hard drive (HDD) mechanism means sequential read/write speeds are capped well below SSD performance — typical USB 3.0 HDD throughput runs 100–130 MB/s, not the interface's theoretical ceiling
  • Seagate Dashboard software has historically received mixed reviews for reliability and usability; power users often replace it with third-party backup solutions
  • Thunderbolt and FireWire 800 adapters are sold separately, making the advertised multi-interface capability an additional cost

Frequently Asked Questions

USB 3.0, which delivers theoretical transfer rates up to 5Gbps — roughly ten times the bandwidth of USB 2.0. It is fully backwards compatible with USB 2.0 ports, though you'll see USB 2.0-limited speeds (up to 480Mbps theoretical) on older systems. For large backup jobs, the difference between USB 2.0 and 3.0 host ports is measured in hours, not minutes.
Yes, with a caveat. The drive ships formatted NTFS. Windows reads and writes NTFS natively. macOS can read NTFS natively but cannot write to it without a driver — Seagate pre-loads an NTFS driver for Mac on the drive itself to enable full read/write access on both platforms without reformatting.
Not natively. USB 3.0 is the built-in interface. Seagate notes that Thunderbolt and FireWire 800 connectivity is possible via separately purchased adapters, but these are not included with the STCA2000100.
Seagate Dashboard, which handles scheduled local backup, social media backup (pulling content from connected social accounts), and multi-file social media upload. The Dashboard software requires installation on the host computer.
Desktop drive — it requires its own AC power supply. It is not bus-powered via USB, which is the design trade-off that allows the larger 3.5" hard drive mechanism and higher storage capacity at a lower cost per terabyte than portable 2.5" drives.

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