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Silicon Power Armor A66 4TB SP040TBPHD66LS3K Rugged Portable Hard Drive USB 3.2 Gen 1 IPX4 Shockproof Black

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Silicon Power
SILICON POWER Armor A66 Hard drive 4 TB SP040TBPHD66LS3K
Silicon Power Armor A66 4TB SP040TBPHD66LS3K Rugged Portable Hard Drive USB 3.2 Gen 1 IPX4 Shockproof Black
€449.56 inc. VAT
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SP040TBPHD66LS3K
€377.78 €419.76
€449.56 inc. VAT
Ships from EU stock: 2 item(s)
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Product Code
04:398816
EAN Code
0886576063065
Manufacturer
Silicon Power
Quick Specs
Capacity
4TB portable HDD (2.5in)
Interface
USB 3.2 Gen 1 (5Gb/s)
Durability
IPX4 + MIL-STD, 1.22m drop
Design
Rubber bumper, cable-carry groove
Delivery

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Trusted Tech Choice
Buying Benefits Verified
Competitive EU pricing
Delivered to Cyprus from EU stock
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Seagate Expansion Portable 4TB — Simple, Bus-Powered Storage to Take Anywhere

4TB PortableUSB 3.0 · Bus-PoweredNo Software NeededRescue Data Recovery Included

The Seagate Expansion Portable 4TB is a compact USB 3.0 external hard drive, bus-powered over a single cable, made for anyone who needs to add lots of affordable storage to a laptop or take large files on the move. Part number STKM4000400, it is true plug-and-play: connect the included USB 3.0 cable and Windows or macOS recognises it instantly with drag-and-drop simplicity — no power adapter, no software to install. It ships pre-formatted as exFAT for out-of-the-box use on both PC and Mac, and includes Seagate Rescue Data Recovery Services for extra peace of mind. Typically in stock with fast delivery across Cyprus.

Note: This is a portable, bus-powered 2.5" drive — no mains adapter is needed, unlike the larger Expansion Desktop (STKP) models. It connects via USB micro-B 3.0 (USB-A cable included) and is backward compatible with USB 2.0 ports at reduced speed. For Time Machine on Mac, a quick one-time reformat is required.
Best For
✓ Expanding a laptop with a small SSD
✓ Carrying large files between locations
✓ Photo, music & document backups
✓ Offloading console game libraries (USB storage)
✓ Adapter-free travel — powered by the cable
✓ Lowest cost per terabyte in a pocket drive

Key Features

 
4TB in Your Pocket
Four terabytes of room for years of photos, videos and documents in a compact 2.5-inch drive that slips into a bag — the affordable way to escape a full laptop disk.
 
Bus-Powered, No Adapter
Powered entirely by the USB 3.0 cable, there is nothing extra to carry — plug it into a laptop or desktop and it is ready. Ideal for travel and clean desk setups.
 
True Plug-and-Play
Pre-formatted exFAT, it works on Windows and macOS the moment you connect it — no drivers, no setup, just drag and drop. Reformatting enables Time Machine on Mac.
 
Rescue Data Recovery Included
Bundled Rescue Data Recovery Services cover professional recovery attempts if the drive is accidentally damaged during the plan period — uncommon at this price and reassuring on a travel drive.

Technical Specifications

Identification
Part Number STKM4000400
EAN / GTIN 0763649160480
MPN STKM4000400
Performance
Capacity 4TB (2.5" portable hard drive)
Interface USB 3.0 (micro-B), USB 2.0 backward compatible
Power Bus-powered via USB cable (no external supply)
Format exFAT out of the box (Windows & Mac); reformat for Time Machine
Systems Windows and macOS, plug-and-play (no software required)
Physical
Dimensions 115.3 x 80.0 x 20.9 mm
Weight 257 g
Colour Black
General
Data Recovery Seagate Rescue Data Recovery Services included
Warranty 2-year limited warranty (EMEA)
In the Box Expansion Portable drive + 18in USB 3.0 cable + quick start guide

Frequently Asked Questions

Is the Silicon Power Armor A66 waterproof?
It is water-resistant, not waterproof. The IPX4 rating protects against rain and splashes from any direction — fine for outdoor and wet conditions — but the drive must not be submerged in water.
Does the Armor A66 work with PS5, Xbox and Mac?
Yes. It connects over USB Type-A and works with Windows, macOS, Linux and gaming consoles for game and media storage. It ships NTFS-formatted (ready for Windows and consoles); for full read/write on a Mac, reformat it to exFAT — a quick one-time step.
How tough is it really — can I drop it?
It meets the MIL-STD 810G Method 516.6 drop standard and survives drops up to 1.22m, protected by a 360° rubber bumper and internal suspension. Bear in mind it is still a mechanical hard drive: the rugged housing greatly reduces risk, but an SSD has no moving parts at all if maximum drop survival is critical.
What do I need to know before buying the SP040TBPHD66LS3K?
It uses a USB Type-A to Type-A cable held in a groove on the case — keep it safe, as replacements are less standard. It is bus-powered (no adapter), IPX4 splash-resistant (not submersible), and as a hard drive it suits backup and transfer rather than editing video directly off the drive.
Singular Expert Insight
The A66 occupies a useful niche: rugged protection at hard-drive prices, when you want 4TB you can throw in a bag without babying it. Be clear-eyed about the trade-off, though — the toughened shell protects a spinning disk that is still more drop-sensitive than flash. If your priority is surviving genuine abuse, a rugged portable SSD (Samsung T7 Shield, SanDisk Extreme) is tougher and far faster, but costs much more per terabyte. The A66 is the smart choice when capacity and budget matter and you simply want better-than-average protection for everyday travel knocks and rain.

Buyer's Guide

Buy it if
You want affordable, rugged 4TB portable storage that shrugs off drops (1.22m, MIL-STD) and rain (IPX4) for travel, fieldwork or outdoor backup — bus-powered, no adapter.
Skip it if
You need true waterproofing, SSD-level speed and shock immunity, or a USB-C cable — a rugged portable SSD serves those better, at a higher price.
Also consider
Silicon Power Armor A66 2TB for less capacity, or a rugged portable SSD (Samsung T7 Shield / SanDisk Extreme) if speed and maximum durability matter more than price per terabyte.

Features - Silicon Power - SP040TBPHD66LS3K

Form Factor
  • 2.5",
  • External
Colour
black
Interface
  • USB3.2
More Details
Product Code
04:398816
EAN Code
0886576063065
Manufacturer
Silicon Power
Technical specifications
Capacity
4TB
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