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Graphite 3.5 inch desktop hard drive with numeric keypad

iStorage

iStorage diskAshur DT2 4TB external hard drive IS-DT2-256-4000-C-X

SKU CH-HSM3-NZ67Q MPN IS-DT2-256-4000-C-X

A 4 TB desktop drive with PIN authentication, AES-XTS 256-bit hardware encryption and FIPS 140-2 Level 3 certification, delivering up to 277 MB/s read and 271 MB/s write over USB 3.2

  • ColorGraphite
  • InterfaceUSB 3.1
  • Capacity4TB
  • CacheN/A
  • RPMN/A
  • FeaturesCommon Criteria EAL5+ (Hardware Certified) ready on-board se

Capacity 4TB

  • 4TB
  • 8TB
  • 12TB
  • 18TB
  • 20TB

Struck-through versions exist but are not stocked here.

  • PIN authentication protects data with 7-15 digit code
  • FIPS 140-2 Level 3 certification meets strict compliance standards
  • AES-XTS 256-bit hardware encryption secures files in real time
  • USB 3.2 interface delivers up to 277MB/s read and 271MB/s write
  • Works on any device with a USB port, no software needed

Secure desktop storage

The iStorage diskAshur DT2 is a 4 TB desktop external hard drive that protects data with a hardware-based AES-XTS 256-bit encryption engine and an on-device keypad. It connects via USB 3.2 and requires no software installation, so it works the moment you plug it into any host with a USB port.

Compliance-focused users

Organisations that must meet FIPS 140-2 Level 3, Common Criteria EAL5+ or GDPR requirements will find the certified microprocessor and tamper-evident design aligned with those mandates. Buyers who need a drive powered solely by the USB bus or who want a smaller form factor for mobile use should consider a portable model instead.

Keypad authentication

The built-in keypad lets you set a 7-15 digit PIN that unlocks the drive before the operating system sees it, removing the need for software utilities or driver updates. Brute-force protection triggers a deadlock freeze after repeated failed attempts, and the drive remains fully functional across Windows, macOS, Linux, Chrome, Android and embedded platforms.

Highlights

  • PIN authentication protects data with 7-15 digit code
  • FIPS 140-2 Level 3 certification meets strict compliance standards
  • AES-XTS 256-bit hardware encryption secures files in real time
  • USB 3.2 interface delivers up to 277MB/s read and 271MB/s write
  • Works on any device with a USB port, no software needed

Specifications

BrandiStorage
SeriesdiskAshur DT2
ModelIS-DT2-256-4000-C-X
ColorGraphite
InterfaceUSB 3.1
Capacity4TB
CacheN/A
RPMN/A
FeaturesCommon Criteria EAL5+ (Hardware Certified) ready on-board secure microprocessor Real-time military grade AES 256-bit XTS Full-Disk Hardware Encryption FIPS PUB 197 Validated Encryption Algorithm (10X faster than USB 2.0)PINs and encryption keys are always encrypted while at restBrute Force Hack Defence Mechanism Tamper ProofImmune to BadUSBEpoxy coated wear resistant keypadNo speed degradation - as fast as any non-encrypted USB 3.1 HDDDesk Lock Slot All components covered with a layer of super tough epoxy resinFIPS 140-2 Level 2, NCSC CPA (foundation level), Common Criteria & NLNCSA
System RequirementsOperating System Compatibility: MS Windows, macOS, Linux, Chrome, Thin Clients, Zero Clients, Android & Embedded Systems
Form Factor3.5"
Dimensions1.71" x 7.30" x 4.41"
Weight2.74 lbs.
Shipping weight1.23 kg
Package size185 × 112 × 43 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What type of USB port must my computer have to power and connect this 3.5" desktop drive?

The drive uses a USB 3.1 interface and requires an available USB port on the host device; it draws power from an included external power adapter rather than the USB bus.

Will the hardware keypad and AES 256-bit encryption function if I plug the drive into an older USB 2.0 port?

Yes, the drive is backwards compatible with USB 2.0 ports; the onboard keypad and real-time hardware encryption operate independently of the USB version, though transfer speeds will be limited to USB 2.0 rates.

How can I verify the drive is encrypting data correctly after I set my 7-15 digit PIN?

After entering your PIN, the drive unlocks and appears as a standard volume; you can confirm encryption is active by disconnecting the drive — data becomes inaccessible until the correct PIN is entered again.

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