---
product_id: 407889967
title: "256GB External SSD Solid State Flash Drive 550MB/s 3.2 Gen2 Thumb(Jump) Drive"
brand: "ssk"
price: "¥16160"
currency: JPY
in_stock: true
reviews_count: 10
category: "Ssk"
url: https://www.desertcart.jp/products/407889967-256gb-external-ssd-solid-state-flash-drive-550mb-s-3
store_origin: JP
region: Japan
---

# 550MB/s read speed USB 3.2 Gen2 + USB-C adapter Shockproof & waterproof design 256GB External SSD Solid State Flash Drive 550MB/s 3.2 Gen2 Thumb(Jump) Drive

**Brand:** ssk
**Price:** ¥16160
**Availability:** ✅ In Stock

## Summary

> ⚡ Transfer at the speed of now — don’t get left behind!

## Quick Answers

- **What is this?** 256GB External SSD Solid State Flash Drive 550MB/s 3.2 Gen2 Thumb(Jump) Drive by ssk
- **How much does it cost?** ¥16160 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/407889967-256gb-external-ssd-solid-state-flash-drive-550mb-s-3)

## Best For

- ssk enthusiasts

## Why This Product

- Trusted ssk brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rugged & Reliable:** Crafted with a premium zinc alloy shell that resists drops, abrasion, and keeps your data safe with waterproof and dustproof protection.
- • **Compact Powerhouse:** Lightweight and pocket-sized design lets you carry 256GB of high-speed storage wherever your hustle takes you.
- • **Blazing-Fast Transfers:** Experience up to 550MB/s read and 520MB/s write speeds—10x faster than standard USB 3.0 drives.
- • **Consistent Performance:** No speed drops during large file transfers—perfect for professionals managing heavy multimedia and work files on the go.
- • **Universal Compatibility:** Seamlessly plug & play with USB-A and USB-C devices including MacBook, smartphones, smart TVs, and car audio systems.

## Overview

The SSK 256GB USB Flash Drive combines ultra-high-speed USB 3.2 Gen2 technology with a durable zinc alloy shell, delivering up to 550MB/s read speeds and reliable shockproof, waterproof protection. Its included USB-C adapter ensures broad compatibility across modern laptops, smartphones, and more, making it the ultimate portable SSD solution for fast, secure, and hassle-free data transfers.

## Description

Buy SSK 256GB USB Flash Drive 550MB/s USB 3.2 Gen2 USB Thumb Drive Fast Transfer Speed Externel Solid State Drive +USB C Adapter USB C Memory Stick for Type C Smartphone,MacBook/Pro/Air Laptop and More: USB Flash Drives - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Surprisingly fast and feels bulletproof! - I ordered this just to have a Windows To Go rescue disk and it handles that beautifully; runs virtually as fast as my system does when using my SSD. The speed is crazy! Read Gb/s in the mid 300's and WRITE in the high 200's. As others have said, it doesn't slow down on big jobs. It gets warm but not hot. This shows up on my system as a SCSI drive, different than my other USB Flash drives - is there an M.2 drive inside???? This acts more like a pure removable SSD than a USB Flash. Made of metal & feels bulletproof (maybe it IS!). Ordering more (bigger capacity) for sure.
Review: This thing is spectacular. - I got this not sure how fast it would be, because the last flashdrive I got was unreliable and overheated. This one definitely gets warm after use, but it is so blazing fast. I have been using it for months now and have transferred so many files. I am extremely happy with it. The solid metal feel is sturdy and resistant while also protecting your fingers from the heat when you reach for it. It managed to make it through a hectic move across the country and I love the USB-C that comes with it. My Dad only has USB-C ports so it's perfect when he asks me for my videos. It transfers Gigabytes of data in seconds! Don't go for the ultra cheap ones, they don't store as much as advertised, are unreliable, and slow. My Dad lost Gigabytes of data because of this. Get this so you don't waste your time, and start enjoying blazing fast and reliable file transfers!

## Features

- New Ultra-High-Speed Transmission: SSK USB 3.2 flash drive provides up to 550MB/s read speed and 520MB/s write speed which is 10 times faster than conventional USB 3.0 memory stick. And more importantly, the speed does not drop during the transmission and the condition of capacity use. It is suitable for daily movement of large-capacity files and photos. According to internal testing, performance may vary slightly due to factors such as host equipment, interfaces, and usage conditions
- Advanced Design: The exquisite and compact SSK solid state external thumb drive is made of high-grade zinc alloy shell, which is resistant to falling and abrasion. The cover firmly holds the USB metal port, and flip-up cap design effectively protects the USB interface
- Safe & Reliable USB SSD Flash Drive: Store your photos, videos, music and files quickly and safely. SSK usb external ssd drive have excellent shock resistance and fast heat dissipation performance, Waterproof and dustproof functions better protect your data
- Portable&Light weight: Make your life easy With this 1TB large capacity data storage, you can take this usb ssd external flash drive with you wherever you go. Advanced business portable USB C drive can record your life and work at any time
- Excellent Compatibility: Fast speed USB stick plug and play. Come with type c adapter, this SSD External USB drive is not only applicable to conventional USB A port computer equipment, smart TV, car audio, but also suitable for USB C smartphones, Laptops and macbook; Backward-compatible with USB 3.0 and USB 2.0 ports

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09HJL9655 |
| Best Sellers Rank | #642 in USB Flash Drives |
| Color | Grey |
| Connectivity Technology | USB |
| Customer Reviews | 4.4 4.4 out of 5 stars (571) |
| Date First Available | September 30, 2021 |
| Flash Memory Size | 250 |
| Flash Memory Type | MLC NAND |
| Hardware Connectivity Technology | USB Type A, USB Type C |
| Item Dimensions LxWxH | 2.76 x 0.79 x 4.72 inches |
| Item Weight | 2.08 ounces |
| Item model number | SD300 |
| Manufacturer | SSK Corporation |
| Model Name | SD300/256GB |
| Product Dimensions | 2.76 x 0.79 x 4.72 inches |
| Read Speed | 550 Megabytes Per Second |

## Product Details

- **Brand:** SSK
- **Hardware Interface:** USB 3.2 Gen 2
- **Memory Storage Capacity:** 256 GB
- **Special Feature:** Compact
- **Write Speed:** 520 MB per second

## Images

![256GB External SSD Solid State Flash Drive 550MB/s 3.2 Gen2 Thumb(Jump) Drive - Image 1](https://m.media-amazon.com/images/I/61Nl0rlAc5L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Surprisingly fast and feels bulletproof!
*by F***K on November 10, 2025*

I ordered this just to have a Windows To Go rescue disk and it handles that beautifully; runs virtually as fast as my system does when using my SSD. The speed is crazy! Read Gb/s in the mid 300's and WRITE in the high 200's. As others have said, it doesn't slow down on big jobs. It gets warm but not hot. This shows up on my system as a SCSI drive, different than my other USB Flash drives - is there an M.2 drive inside???? This acts more like a pure removable SSD than a USB Flash. Made of metal & feels bulletproof (maybe it IS!). Ordering more (bigger capacity) for sure.

### ⭐⭐⭐⭐⭐ This thing is spectacular.
*by M***L on November 15, 2023*

I got this not sure how fast it would be, because the last flashdrive I got was unreliable and overheated. This one definitely gets warm after use, but it is so blazing fast. I have been using it for months now and have transferred so many files. I am extremely happy with it. The solid metal feel is sturdy and resistant while also protecting your fingers from the heat when you reach for it. It managed to make it through a hectic move across the country and I love the USB-C that comes with it. My Dad only has USB-C ports so it's perfect when he asks me for my videos. It transfers Gigabytes of data in seconds! Don't go for the ultra cheap ones, they don't store as much as advertised, are unreliable, and slow. My Dad lost Gigabytes of data because of this. Get this so you don't waste your time, and start enjoying blazing fast and reliable file transfers!

### ⭐⭐⭐⭐⭐ P h e n o m e n a l & unmatched quality!
*by K***S on August 11, 2025*

Anyone need a true SS 2TB stick, this it is! Tested on torrenting applications...just like you who are reading this is planning to use. Don't deny it ;) Positives Very fast, registers as a 3.2usb device. The speeds are blazing (untested) from a user experience only. Great heat distribution, this stick as you can imagine can get hot. The case around it is made of steel. It's created to cool down upon high file transfers. No other USB stick I found uses the entire stick as a heatsink to keep itself cool. My only complaint is not paying for copper instead of steal. Some users have reported that this can be modified in the future (outside warranty). *** I have confirmed this is a TRUE 2TB. Does NOT recycle data. Neutral It's a beast when it comes to durability and ruggness. It's a tough monster that is heavy. If your looking for something light for keychain, look elsewhere. Yes keep any magnetics away from this too. Negatives Hmm, no other color options? Copper would be a better more costly metal. I don't think encryption hardware/software is included (use your own).

## Frequently Bought Together

- SSK 256GB USB Flash Drive 550MB/s USB 3.2 Gen2 USB Thumb Drive Fast Transfer Speed Externel Solid State Drive +USB C Adapter USB C Memory Stick for Type C Smartphone,MacBook/Pro/Air Laptop and More
- SSK 256GB Dual USB C Flash Drive, 2-in-1 Type C+ USB A 3.2 Gen2 Solid State Thumb Drive,Speed Up to 550MB/s Memory Stick Data Storage for iPhone 15, Android Phone,Tablet,MacBook,Windows

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-04-29*