Zarmst USB-C 4-in-1 Flash Drive 256GB Blue
Score: 69/100
Vansuny USB Flash Drive 512GB
Score: 79/100Rankings
The Vansuny 512 GB Type-C flash drive delivers near-1 GB/s sequential performance and a rugged zinc-alloy body with dual USB-A/C connectors. Its random-access speeds and occasional USB-C throttling are drawbacks. Ideal for creators moving large media files on the go.
The ZARMST 256 GB 4-in-1 flash drive offers a versatile multi-connector design and an encryption app, making cross-platform storage convenient. However, its real-world transfer speeds fall short of claims and it can become hot during use. Best suited for users needing occasional backups across devices.
| Attribute | | |
|---|---|---|
256 GB | 512 GBbest | |
80 MB/s | 1,013.42 MB/sbest | |
30 MB/s | 963.46 MB/sbest | |
| ↓ lower better | 32 gbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 256 GB | 512 GB |
Performance(2) | ||
Read Speed (MB/s) | 80 MB/s | 1013.42 MB/s |
Write Speed (MB/s) | 30 MB/s | 963.46 MB/s |
Connectivity(2) | ||
USB Version | USB 3.0 | USB 3.2 Gen 2 |
Interface | Lightning, Micro USB, USB-C, USB-A | USB Type-A + USB Type-C (OTG) |
General(1) | ||
OS Compatibility | iPhone, iPad, Android (OTG), PC, Mac | Windows 7/8/10/XP/2000/ME/NT, Linux, Mac OS |
Build & Design(2) | ||
Dimensions (L×W×H) (mm) | 42.93×22.10×5.08 mm mm | 79.7×21.2×8.5 mm mm |
Material | Aluminum frosted | Zinc alloy |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the ZARMST drive for its versatile 4-in-1 connector layout, compact thumb-drive form factor, and the security-focused app that adds encryption and fingerprint unlocking. However, they criticize the gap between advertised and real-world speeds, heat generation during transfers, case-related compatibility issues, and raise doubts about the true usable capacity and overall build durability.
Everyday users love the convenience of a single drive that works across iPhone, Android and computers, especially the one-click backup app and the ability to move large media files via USB 3.0. Recurring complaints focus on slower-than-expected transfer speeds, the device heating up, incompatibility with phones in cases, and uncertainty about whether the full 256 GB is actually usable.
Professional reviewers commend the Vansuny 512GB OTG drive for its near-advertised sequential performance, high AS SSD benchmark score, and robust zinc-alloy construction, but they point out inconsistent USB-C speeds and modest random 4K read rates, and note the lack of coverage from major tech publications.
Everyday users appreciate the fast large-file transfers, especially the ability to move a 4 GB movie to a phone in seconds, and value the plug-and-play experience across multiple platforms, though they report occasional port-speed differences and wish for more information on durability and heat.
