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White square portable SSD with rounded corners and magnetic back

DATO

DATO ARES Q4 2TB portable SSD

SKU CH-HFYM-BY50J

A portable 2 TB SSD with magnetic MagSafe attachment for iPhone 15 Pro and 16 Pro Max, delivering up to 4000 MB/s read and 3600 MB/s write over USB 3.2 Gen 2x2

  • Total capacity2 TB
  • Sequential read speedUp to 4,000 MB/s
  • Sequential write speedUp to 3,600 MB/s
  • Interface typeUSB 3.2 Gen 2 × 2
  • Form factorPortable
  • Product depth6.4 in x 6.4 in x 1.2 in

Capacity 2TB

  • Magnetic MagSafe attachment secures drive to iPhone 15/16 Pro Max
  • Up to 4000 MB/s read and 3600 MB/s write speeds
  • Records 4K ProRes HDR video directly to the SSD
  • Weighs only 40 grams with compact 64 mm aluminium shell
  • Includes 40 Gb/s USB-C cable plus USB-C to A adapter

Magnetic Portable SSD

The DATO ARES Q4 is a 2 TB external solid-state drive that attaches magnetically to iPhone 15 Pro and newer models. Its MagSafe-compatible connection removes the need for cables during mobile recording or file offload. The drive weighs 40 grams and measures 64 by 64.3 by 12 millimetres, making it pocketable for field work.

Speed and Capacity Headroom

Sequential reads reach 4000 MBps and writes reach 3600 MBps over the USB 3.2 Gen 2x2 interface, so large ProRes libraries move in seconds. The 2 TB capacity holds hours of 4K HDR footage before a transfer is required. Sustained write performance can become the limiting factor during very long, high-bitrate takes.

Direct 4K ProRes Recording

The decisive specification is the ability to record 4K ProRes HDR video straight to the drive from a compatible iPhone. This eliminates an intermediate copy step and keeps internal phone storage free. Buyers who do not shoot ProRes on a supported iPhone will not use this core capability.

How it compares

Measured against everything we stock in Portable USB SSDs, at today’s prices. Recalculated every night.

Price $225.99
Pricier than about 56% of the 410 comparable items (median $202.99).
Total capacity 2 TB
Higher than about 60% of the 311 comparable items (median 1 TB).
Sequential read speed Up to 4,000 MB/s
Higher than about 92% of the 157 comparable items (median 1,050 MB/s).
Price per TB $113.00 per TB
Cheaper than about 68% of the 310 comparable items (median $142.00 per TB).

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Specifications

Product
Brand nameDATO
Product lineARES Q4
Model nameARSQ4-2 TB
Part numberARSQ4-2 TB
Total capacity2 TB
Product colorWhite
Performance
Sequential read speedUp to 4,000 MB/s
Sequential write speedUp to 3,600 MB/s
Ports & slots
Interface typeUSB 3.2 Gen 2 × 2
Size & build
Form factorPortable
Overall width6.4 in x 6.4 in x 1.2 in
Product depth6.4 in x 6.4 in x 1.2 in
Overall height6.4 in x 6.4 in x 1.2 in
Product weight40 g
In the box
Included items40Gb/s USB-C to C cable with 10Gb/s USB- C to A adapter

Other versions of this model

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Questions about this item

Will the USB 3.2 Gen 2x2 interface on the ARES Q4 run at full speed when plugged into an older USB 3.2 Gen 2x1 port?

The drive will work but speeds drop to the older port's 10 Gbps limit, so you lose the 4000 MB/s read and 3600 MB/s write potential.

How can I confirm the ARES Q4 is delivering its rated 4000 MB/s read and 3600 MB/s write after setup?

Run a benchmark tool such as CrystalDiskMark or Blackmagic Disk Speed Test over the USB-C cable; sequential results should approach the stated figures on a USB4 or USB 3.2 Gen 2x2 host.

What comes in the box with the 2 TB ARES Q4 and do I need to buy any extra cables for USB-A hosts?

The package includes a 40 Gbps USB-C to C cable and a 10 Gbps USB-C to A adapter, so no extra purchase is required for either port type.

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