MOSDART 512GB USB C & A 3.2 150MB/s Dual Flash Drive with Keychain
Bottom line: The MOSDART 512GB USB C & A 3.2 150MB/s Dual Flash Drive with Keychain ($72.99 on Amazon as of 2026-10-07): 512GB in a keychain-sized drive, enough for hours of 4K footage; main trade-off: rotating metal shell and separate USB-C cap are two more parts to break.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 512GB in a keychain-sized drive, enough for hours of 4K footage
- ✓ Dual USB-C and USB-A 3.2 ends, no dongle needed between phone and laptop
- ✓ Extended USB-C tip clears most phone cases without removing them
- ✓ Up to 150MB/s reads, fast enough for bulk photo and video offloads
- ✓ LED blinks during transfers so you know before you unplug
Cons
- ✗ Rotating metal shell and separate USB-C cap are two more parts to break
- ✗ 150MB/s is a read figure; write speed is not published by mosDART
- ✗ No IP rating or drop spec listed despite being sold as a keychain drive
Manufacturer description
The mosDART 512GB dual flash drive solves the problem of moving large photo and video libraries between devices that use different ports. One end is USB-C, the other is USB-A 3.2, so the same drive plugs into an Android phone, an iPhone 15, 16, or 17, a MacBook, or an iPad without a dongle in between. Transfer speeds reach up to 150MB/s, which matters when you are offloading 4K clips rather than a handful of documents. The USB-C connector is extended past the housing, so you can leave your phone case on instead of prying it off every time you need to dump footage. A rotating metal shell…
SpecPicks Verdict
SpecPicks scored MOSDART 512GB USB C & A 3.2 150MB/s Dual Flash Drive with Keychain using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. mosDART's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will this work with my iPhone 15?
Yes. The USB-C end plugs directly into iPhone 15, 16, and 17, along with Android phones, iPads, and MacBooks. mosDART lists all of these as supported.
Do I have to take my phone case off to use it?
No. mosDART built the USB-C connector longer than usual specifically so the tip reaches past a case. It is listed as phone case friendly.
How fast does it actually transfer?
mosDART rates it at up to 150MB/s over USB 3.2. Real-world speed depends on your host port, file sizes, and whether you are reading or writing; the write figure is not published.
Is 512GB enough for video?
For most phone shooters, yes. 512GB covers several hours of 4K phone footage or tens of thousands of photos, and the keychain loop makes it practical to carry that capacity daily.
How are the ports protected when it is on my keys?
The USB-A side sits inside a rotating metal shell and the USB-C side has its own cover. mosDART does not publish a waterproof or drop rating, so check the listing for current durability details.
Key Features
- Endless flexibility: Our 512GB USB C 3.2 dual flash drive lets you effortlessly transfer files between Android smartphones, tablets, and computers. No more frustration with compatibility issues!
- Blazing-fast data transfer: Say goodbye to long wait times! Our USB C 3.2 thumb drive boasts lightning-fast data transfer speeds up to 150MB/S, allowing you to transfer files in just seconds
- No need to remove the shell: Our USB C memory stick has a longer type c port, so you don't have to remove the shell to use it. It's hassle-free and convenient.
- Never lose your data again: Our sturdy keychain ensures that you'll never misplace your 2in1 type C 3.2 flash drive. Clip it to your backpack, keys, or lanyard and always have your data within reach
- Led indicator and durable design: LED Indicator blinks while data transferring on process. The rotating metal design protects the USB A port and the USB C port has a cover to ensure your data stays safe.
Full Specifications
| Brand | mosDART |
|---|---|
| Color | Purple |
| Read Speed | 150 Megabytes Per Second |
| Unit Count | 1.0 Count |
| Write Speed | 100MB/s or 120MB/s |
| Connectivity | USB-C |
| Model Number | UD211C-Purple-512GB |
| Compatibility | Android, iOS |
| Special Feature | 2 in 1 OTG Flash Drive, LED Indicator |
| Flash Memory Type | USB |
| Compatible Devices | iPhone 15, iPhone 16, Android phones, iPad, MacBook, other laptops |
| Hardware Interface | USB 3.2 Gen 1 |
| Additional Features | 2 in 1 OTG Flash Drive, LED Indicator |
| Warranty Description | 5 years warranty |
| Connectivity Technology | USB |
| Memory Storage Capacity | 512 GB |
| Item Dimensions D x W x H | 0.37"D x 1.18"W x 3.78"H |
| No need to remove the shell | Our USB C memory stick has a longer type c port, so you don't have to remove the shell to use it. It's hassle-free and convenient. |
| Hardware Connectivity Technology | USB Type A, USB Type C |
| Full listing title | MOSDART 512GB USB C & A 3.2 150MB/s Dual Flash Drive with Keychain, Purple | Fits Android Phones, iPhone 15, 16, 17, Macbook, iPad, For Photos and Videos, USB-C Port Protection, Phone Case Friendly |
Ready to buy?
MOSDART 512GB USB C & A 3.2 150MB/s Dual Flash Drive with Keychain, Purple | Fits Android Phones, iPhone 15, 16, 17, Macbook, iPad, For Photos and Videos, USB-C Port Protection, Phone Case Friendly is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Related Accessories
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best 1440p Gaming GPUs in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- Best Retro Handhelds in 2026 — From $35 to $500
- How to Build a Windows 98 Retro PC in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
More reviews from the SpecPicks archive
Browse all reviews →- Build a Couch Emulation Station: Raspberry Pi 4 + 8BitDo SN30 Pro
- Forza Horizon 6: Is 8GB VRAM Enough or Do You Need an RTX 3060 12GB?
- RX 580 in 2026: Still Worth It for 1080p Gaming?
- LM Studio vs Ollama on an RTX 3060 12GB: Which Local Runtime in 2026?
- Ryzen 5 5600G vs Ryzen 7 5700X: Best CPU for a First Gaming PC in 2026
- Alien: Isolation on Steam Deck: Best Settings for 2025
- CRT Monitor for Retro Consoles: 2025 Buying Guide
- 10 Raspberry Pi Projects Worth Building in 2025
- Best Streaming Starter Kit for Creators in 2026
- CPU Cooler Bracket Fix: How to Secure Your CPU When It Fails
- llama.cpp vs vLLM for Single-User Local Chat in 2026: Which Wins on a 12GB GPU?
- retrorecs.com: A New Retro Game Recommendation Engine
- Self-Hosted Home Assistant on a Raspberry Pi 4 8GB (2026 Build)
- Proprietary Models See Your Business: The Case for a Local Ryzen + RTX 3060 Rig
- Best Budget SSDs for Gaming PC Builds in 2026
- Best Webcam and Mic Setup for Streaming Under $300 (2026)
- Network-Wide Ad Blocking with Pi-hole on a Raspberry Pi 4 8GB (2026 Setup)
- Best Racing Wheel for Forza Horizon 6 on PC (2026)
- Build a Silent Pi 4 NVMe Homelab: Cooling, VESA, SSD Boot
- Best Budget Upgrades for a Ryzen Gaming PC in 2026
- Build a Raspberry Pi Bird-Song Logger with a USB Mic (2026)
- Best Gaming Headsets and Audio Gear for Console Players in 2026
- Best Sim Racing Wheel for PC and Console in 2026
- Ryzen 5 5600G vs Ryzen 7 5700X for a No-GPU Home Server
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090