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Rectangular black portable SSD with integrated USB cable and keypad, 3 by 4.8 by 0.65 inches

Apricorn

Apricorn AFL3-S4TB 4TB portable SSD

SKU CH-GYPZ-8Y2NM MPN AFL3-S4TB

Hardware-encrypted 4TB portable SSD with USB 3.2 Gen 1 interface, rated for -40°C to +70°C operation and 1500G shock resistance

  • Capacity4TB
  • InterfaceUSB 3.2 Gen 1
  • Operating Temperature-40°C ~ +70°C
  • Max Shock Resistance1500G/0.5ms | Virtually shock and vibration resistant
  • Max Vibration Resistance20G/20-2000Hz
  • Width3.00"
  • 4TB capacity stores large datasets securely
  • USB 3.2 Gen 1 interface enables fast transfers
  • 1500G shock resistance protects data during drops
  • Operates from -40°C to +70°C in harsh environments
  • Compact 3.00" x 4.80" x .65" design fits anywhere

Encrypted 4TB portable SSD

The Apricorn Aegis Fortress L3 AFL3-S4TB is a 4TB external solid-state drive that connects through a USB 3.2 Gen 1 interface. Hardware-based encryption protects stored data without requiring software installation on the host computer. The drive is designed for users who need secure, high-capacity storage that can be moved between systems quickly.

Ruggedised construction for harsh environments

The enclosure is rated to survive shocks of 1500G for 0.5ms and vibration of 20G across a 20 to 2000Hz range. An operating temperature window of -40°C to +70°C allows use in extreme cold or heat. These specifications mean the drive can remain functional in field conditions that would damage conventional portable storage.

Suited for mobile professionals needing hardware

Workers who transport sensitive data between locations benefit from the built-in security and physical durability. Buyers who require faster transfer speeds than USB 3.2 Gen 1 provides, or who need a different capacity point, should evaluate alternative drives that match those specific requirements.

Highlights

  • 4TB capacity stores large datasets securely
  • USB 3.2 Gen 1 interface enables fast transfers
  • 1500G shock resistance protects data during drops
  • Operates from -40°C to +70°C in harsh environments
  • Compact 3.00" x 4.80" x .65" design fits anywhere

Specifications

BrandApricorn
SeriesAegis Fortress L3
ModelAFL3-S4TB
Capacity4TB
InterfaceUSB 3.2 Gen 1
Operating Temperature-40°C ~ +70°C
Max Shock Resistance1500G/0.5ms | Virtually shock and vibration resistant
Max Vibration Resistance20G/20-2000Hz
Width3.00"
Depth4.80"
Height0.65"
Shipping weight0.68 kg
Package size173 × 102 × 38 mm

Questions about this item

Will the internal flash memory or controller need replacement after a certain amount of data written?

The drive uses solid-state storage with no moving parts, so no mechanical components require replacement under normal use.

Does the USB 3.2 Gen 1 interface limit sustained transfer speeds before the drive itself does?

Yes, the USB 3.2 Gen 1 connection caps maximum throughput at 5 Gbps, which is reached before the internal SSD hits its own limits.

How much heat does the metal enclosure produce during all-day operation?

The drive is rated to operate from -40°C to +70°C, so the enclosure stays within safe temperatures during continuous use.

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