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SK-3501 U3.1
3.5" & 2.5" Storage Enclosure

New Condition | Open Box

USB-C / SATA 6.0GB/s
AKiTiO's SuperSpeed USB 3.1 Portable Storage Enclosure for 3.5" Drives
Experience the speed, power and versatility of SuperSpeed USB 3.1 10Gbps (USB 3.1 Gen 2) with the SK-3501 U3.1 storage enclosure for 3.5" desktop drives. Stylish, compact and simple to use, this fanless aluminum enclosure is ideal for quiet working environments.
SuperSpeed USB 10Gbps (USB 3.1 Gen 2)
By incorporating the latest SuperSpeed USB 10Gbps (USB 3.1 Gen 2) technology, the SK-3501 U3.1 is able to deliver up to twice the speed of the USB 3.1 Gen 1 connection which runs at only 5Gbps. At the same time, with a corresponding USB-C to USB adapter cable, the device is also backwards compatible with the widely used USB 3.0 technology.
Reversible USB Type-C™ Connector with Power Delivery
The reversible USB Type-C (USB-C) connector enhances ease of use for connecting USB devices with a focus on minimizing user confusion for plug and cable orientation. The SK-3501 U3.1 supports power delivery (PD) over USB-C, providing 15W of power to laptops like the MacBook Pro (late 2016) that support charging from a 5V/3A power source. This allows you to work with the external drive without the battery levels of your laptop dropping even though the laptop is not plugged into any other power source.

Product Specifications:

AKiTiO Part Number

  • SM3-U31AS-AKTU

RoHS Compliant

  • Yes


  • CE
  • FCC
  • VCCI

Drives Supported

  • 3.5" SATA 6Gb/s HDD
  • Can instead house a 2.5" SATA 6Gb/s SSD or HDD (only one mounting screw)

Housing Material

  • High quality aluminum for optimized heat dissipation

Housing Color

  • Silver

PC Compatibility

  • Windows 7 or above

Mac OS Compatibility

  • mac OS 10.12 or above

Other Requirements

  • Computer with USB Type-C connector or otherwise a USB-C to USB Type-A adapter cable is required (not included).


  • (1) USB-C port supporting USB 3.1 Gen 2

Number of Bays

  • (1) 3.5" bay

Security Slot

  • No

Power Button

  • Yes

Data Rates

  • USB 3.1 gen 1 : 5.0 Gb/s (or 625 MB/s
  • USB 3.1 gen 2 : 10 Gb/s (or 1250 MB/s)

Power Supply

  • External power supply
  • UL, cUL, PSE, CE, FCC, GS, NOM, S, CCC, BSMI, PSB, RCM, KCC, TUV approved

AC Input

  • 100-240V, 50-60Hz, 0.9A Max

DC Output

  • +12V/3A


  • Environmental (Operating)
    • Temperature 41°F to 95°F (5°C to 35°C
    • Altitude -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
  • Environmental (Non-Operating)
    • Temperature -4°F to 140°F (-20°C to 60°C)
    • Altitude -304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)


  • Height: 4.0 cm (1.6 in)
  • Length: 19.3 cm (7.6 in)
  • Width: 11.4 cm (4.5 in)


  • This device is not backwards compatible with USB 2.0 computers.
  • For best performance and power delivery (PD), use the included USB-C cable.
  • Even with a 2.5" SSD, this enclosure always requires an external power adapter.
  • This product has components or design elements that are patented or patent pending.
Manufacturer provided specifications for AKiTiO p/n SM3-U31AS-AKTU UPC#: 888038002513



  • SK-3501 U3.1 enclosure (drive not included)
  • USB-C to USB-C cable (1m)
  • Power adapter
  • Setup guide
AKiTiO SK-3501 U3.1 3.5" & 2.5" Storage Enclosure Mfr P/N: SM3-U31AS-AKTU OWC SKU: AKTSM3U31ASO SuperSpeed USB 3.1 (Gen 2) with 15W USB power delivery to compatible laptops. Supports one 3.5" HDD or one 2.5" SATA SSD/HDD. Includes USB-C to USB-C cable. 2 Year OWC Limited Warranty
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