Orico USSD I-C 512GB
Score: 92/100
SSK Dual USB-C 128GB
Score: 89/100Rankings
The 512 GB ORICO USB-A flash drive delivers top-tier read speeds, solid write performance and rugged metal construction with IPX7 water resistance, targeting power users who need fast, reliable transfers. The detachable cap is a noted weak point.

The SSK 128 GB dual-head flash drive delivers SSD-level speeds in a rugged metal case, offering USB-C and USB-A 3.2 Gen2 connectivity and extensive OS support. Its durability features make it ideal for creators on the move, though its size and occasional speed throttling near capacity are trade-offs.
| Attribute | Orico USSD I-C 512GB | ![]() |
|---|---|---|
512 GBbest | 128 GB | |
520 MB/s | 550 MB/sbest | |
353 MB/s | 520 MB/sbest | |
| ↓ lower better | 6.24 gbest | 37 g |
| ↓ lower better | 39.9 mmbest | 78 mm |
| ↓ lower better | 20.1 mmbest | 20.5 mm |
| ↓ lower better | — | 8.6 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | Orico USSD I-C 512GB | ![]() |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 512 GB | 128 GB |
Performance(2) | ||
Read Speed (MB/s) | 520 MB/s | 550 MB/s |
Write Speed (MB/s) | 353 MB/s | 520 MB/s |
Physical(4) | ||
Weight (g) | 6.24 g | 37 g |
Length (mm) | 39.9 mm | 78 mm |
Width (mm) | 20.1 mm | 20.5 mm |
Material | Metal alloy | Zinc alloy |
Connectivity(1) | ||
USB Interface | USB 3.2 Gen 1 | USB-C/USB-A 3.2 Gen2 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux | Windows, macOS, Linux, Android, iOS |

Products in the top-left offer the best value (high score, low price).
Reviewers highlight the high read speed and consistent thermal management, noting the USSD architecture gives SSD-like reliability, while the metal body and IPX7 rating add rugged appeal.
Users love the blazing transfer rates and sturdy build, but many complain about the cap's difficulty and occasional breakage.

Professional reviewers highlight the SSK SD301 as a rare flash drive that delivers SSD-class throughput while offering a dual-head USB-C/USB-A design, making it ideal for creators who need to move large media files between phones and laptops.
Everyday users consistently praise the drive's blazing fast transfers and sturdy feel, calling it "very handy for video editing" and noting flawless operation with iPhone 15 and MacBook.
“Cap being extremely difficult to remove”
“Drive became unusable after the cap broke”
“Fast file transfers, especially for large video files (e.g., 480GB transferred in under an hour)”
