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Head-to-head · Best Portable SSDs

ACASIS USB4 40Gbps NVMe Enclosure vs Sabrent Rocket Nano V2

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Sabrent Rocket Nano V2 comes out ahead by a narrow margin (3.8 vs 4.0). The gap is mostly about users seeking a pocketable, high-capacity external SSD — read the strengths below before deciding.

ACASIS USB4 40Gbps NVMe Enclosure
Ranked #6 in Best Portable SSDs
ACASIS USB4 40Gbps NVMe Enclosure
$79

The ACASIS TBU405 Air delivers strong real-world performance for users needing fast external NVMe storage at a budget-friendly price point. My Tech Grid reviewer Everett Ashford praised its consistent sustained speeds and thermal control during long transfers, calling it a solid pick for video editors and photographers. The unit supports Thunderbolt 4/3 and USB4 with active cooling, making it ideal for power users on M1/M2 MacBooks and Windows laptops. However, Reddit users noted the fan noise under load and lack of encryption/RAID features may be drawbacks for enterprise users. Best for creative professionals who want Thunderbolt speeds without the premium cost, but those needing quiet operation or advanced features should consider alternatives.

Strengths
  • — Supports Thunderbolt 4/3 and USB4 with up to 40Gbps transfer speeds
  • — Active cooling system with fan and thermal pad ensures sustained performance under heavy load
  • — Tool-free installation for M.2 NVMe drives with support for 2280, 2260, 2242, and 2230 sizes
Watch-outs
  • — Fan is audible during sustained heavy use
  • — No hardware encryption or RAID capabilities
  • — Some early firmware polish needed for maximum compatibility with older USB ports
$79 · Check Price on AmazonFull review →
Sabrent Rocket Nano V2
Higher ratedRanked #5 in Best Portable SSDs
Sabrent Rocket Nano V2
$519

The Sabrent Rocket Nano V2 delivers solid performance for its compact size with USB 3.2 Gen 2x2 support and up to 4TB capacity, though it falls short of peak Gen 2x2 speeds at 1,500MB/s. TechRadar noted it sustains throughput well but criticized the lack of endurance specs and minimal software support. PCWorld praised its small profile and good performance, but emphasized it's behind the 20Gbps curve. This drive appeals to users seeking a pocketable, high-capacity external SSD, but those wanting better warranty coverage or encryption should consider alternatives like the Corsair EX100U.

Strengths
  • — USB 3.2 Gen 2x2 support with quoted speeds up to 1,500MB/s read/write
  • — 4TB capacity option in a very compact form factor (11.9 x 29.6 x 69.95mm)
  • — No thermal throttling during sustained performance
Watch-outs
  • — Only 3-year warranty compared to 5-year warranties from competitors
  • — No IP rating or specified operating temperature limits
  • — Lacks hardware encryption and software support
$519 · Check Price on AmazonFull review →

How they stack up

ACASIS USB4 40Gbps NVMe Enclosure

The ACASIS USB4 40Gbps NVMe Enclosure outperforms the ASUS ROG Strix Arion in terms of Thunderbolt 4/3 support and active cooling, making it ideal for creative professionals. However, it's less aesthetically pleasing than the OWC Express 1M2 and lacks hardware encryption, which the OWC offers. Compared to the Plugable USBC-NVME, it provides better performance and compatibility but at the cost of fan noise and a more complex installation process.

Sabrent Rocket Nano V2

The Sabrent Rocket Nano V2 stands out with its compact form factor and 4TB capacity, but it lags behind the OWC Express 1M2 in terms of transfer speeds and universal compatibility. Unlike the ACASIS USB4 40Gbps NVMe Enclosure, it doesn't offer active cooling or Thunderbolt support, making it less suitable for heavy-duty users. Compared to the ASUS ROG Strix Arion, it's more affordable and portable but lacks premium features like RGB lighting and a rigid aluminum build.

Specs side-by-side

SpecACASIS USB4 40Gbps NVMe EnclosureSabrent Rocket Nano V2
InterfaceThunderbolt 4/3, USB4USB 3.2 Gen 2x2
SpeedUp to 40Gbps1,500MB/s read/write
CapacityUp to 4TB4TB
Form Factor2280, 2260, 2242, 2230M.2 2230 NVMe
Dimensions100 x 68 x 15 mm11.9 x 29.6 x 69.95mm
Weight110 g46g
CompatibilityM1/M2 MacBooks, Windows laptopsPS5, Steam Deck, Windows, macOS
MaterialAluminum AlloyAluminum
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