Seagate STKM4000400

Overview

The Seagate STKM4000400 is a portable external hard drive designed to provide 4TB of extra storage for documents, photos, videos, and project files. Its slim and lightweight design fits easily into backpacks or laptop sleeves, making it a practical solution for expanding storage or transferring large files between home, office, and school environments. With a USB 3.0 interface, it offers fast data transfer speeds while drawing power directly from the connected computer, eliminating the need for an external power adapter.

Key features

• Large 4TB capacity that accommodates extensive media libraries, backups, and work files without frequent offloading
• USB 3.0 connection paired with a micro-USB Type B port ensures quick and reliable data transfers
• Preformatted in exFAT, allowing seamless compatibility with both Windows and macOS systems right out of the box
• Bus-powered design simplifies portability by removing the need for an external power source
• Includes Seagate Rescue Data Recovery Services where available, providing added security for important data
• Comes with a 45.7 cm USB 3.0 cable for easy and convenient setup
• Drag-and-drop file management requires no additional software, making backups and file transfers straightforward

Key specs

• Storage capacity: 4TB
• Interface: USB 3.0 with micro-USB Type B connector
• Power: Bus-powered via USB connection
• File system: Preformatted in exFAT for cross-platform compatibility
• Cable length: 45.7 cm USB 3.0 cable included

Connectivity and compatibility

This external hard drive connects through a USB 3.0 port using a micro-USB Type B connector, which locks securely during use to prevent accidental disconnections. Its exFAT formatting supports both Windows and macOS systems without requiring reformatting or additional drivers, making it ideal for users who work across different platforms or need to share files easily.

Ideal uses and environments

The Seagate Expansion 4TB drive is well suited for photographers needing a portable working library on location, students managing large media projects throughout a semester, and professionals who prefer to keep offline backups close at hand. Its combination of high capacity, fast transfer speeds, and simple plug-and-play operation fits well in home offices, classrooms, and mobile work setups where reliable and accessible storage is essential.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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