Security USB Memory


RUF3-HSL Series USB flash memory products feature hardware-based forced data encryption.
All data saved to the flash memory is encrypted, which prevents the data leakage if the drive is ever lost or stolen.
There is no need to install any security software, either, so it’s easy to use with most any OS.

*This product is not compatible with security management software RUF2-HSC-MGR.

USB 3.0 handles huge amounts of data easily

USB 3.0-supported devices capable of high-speed data transfers can increase your work efficiency tremendously.
Using USB 3.0 for the RUF-HS Series security functions makes it perfect for business models that involve handling of critical data.

Strong forced hardware encryption

Since any data saved to the RUF3-HSL is force-encrypted, you never need to worry about encryption hassles or forgetting to encrypt the data. Access to the RUF3-HS also requires password authentication. Even if the drive is ever lost or stolen, the combination of forced encryption and password authentication prevents leakage of your vital data.

Password authentication prevents unauthorized access

The RUF3-HSL Series features password-based security to prevent use by third parties. Only those persons who know the password can use the RUF3-HSL, so you can save your data with confidence. After authentication with the password is completed, you can save and edit the files just as you would on an ordinary USB drive.

* Initialization required when the password is forgotten or is incorrectly entered consecutively ten times.

AutoRun tool automatically launches authentication screen

The RUF3-HSL includes Buffalo's own AutoRun function that opens password authentication (OPEN_HS.exe) automatically.
This calls up the authentication screen, so there is no need to bother clicking to open the authentication screen program every time you need it.

No driver installation required

The RUF3-HSL does not require installation of any drivers, regardless of administrator or user permissions.

Automatic password authentication allows you to bypass password entry

Although it is reassuring to know that the drive can only be accessed by users who know the password, having to enter the password each time the drive is used can be a hassle. The RUF3-HSL features an "automatic password authentication function" that allows you to use the flash drive without entering the password.
If, for example, you've registered your home computer with the RUF3-HSL, you can then easily use the drive with that computer at home without entering the password. The password is still required when you connect it to an unregistered computer outside the home.
Using this feature with the AutoRun tool allows you to open the password authentication screen automatically and use the drive right away.

[Maximum number of registered devices]
• Maximum number of computers that can be registered to one RUF3-HSL: 3
• Maximum number of RUF3-HSL drives that that can be registered to one computer: 10

Other Features

AutoRun virus protection

There is a type of computer virus—the "AutoRun virus"—that infects computers through USB flash memory products. The RUF3-HSL detects how AutoRun virus infection spreads and then uses alternate means to prevent the virus from spreading further.
(1) If AutoRun.inf contains a description to open an application, the portion with the description is automatically deleted.
(2) The user is informed of the deletion.

Smart capless design

The capless slider design makes the RUF3-HSL easy to use with one hand. And with no cap to lose, it makes carrying your data even easier.

Includes convenient strap hole

You can attach a strap to the RUF3-HSL for greater convenience. This also helps prevent the drive from being lost.

Convenient, high-capacity storage on the go

The RUF3-HSL lets you store large amounts of data with confidence, so you can carry documents, photos, videos, and other materials required in business settings, ready whenever you need them.

RoHS Compliant

This product complies with the "RoHS Directive," a directive implemented in the EU since July 2006 that places restrictions on the use of specified hazardous substances in manufacturing electrical and electronic equipment.

Hardware Overview




Memory capacity


USB Interface

Standard Compliance USB 2.0 / USB 3.0
Number of Ports 1
Data Transfer Rate Max. 5 Gbps (USB 3.0) Max. 480 Mbps (USB 2.0)

Key Feature

Forced Hardware Data Encryption AES 256bit
Virus Check -
Compatible with security management software -
Password authentication Y

Virus Check

Licence -

OS Support

Variety Windows 8.1 / 8 (64bit/32bit), 7 (64bit/32bit), Vista SP2 (64bit/32bit), XP SP3 (32bit),Windows Server 2012R2 / 2012 / 2008R2 / 2008


Dimensions (LxWxH, mm) 55 x 21 x 9
Weight 10 g
Operating Environment Temperature 0 - 40℃, Humidity 10 - 85% (Non-condensing)
Power Consumption 2.5W
Power Supply DC 5V±5% (USB powered)
Warranty 1-year

Package Contents

Contents RUF3-HSL
Quick Setup Guide
Warranty Statement

You can compare the specifications of the product in this page. Click the model which you want to compare and click the “Compare”button.

  • RUF3-HSSecurity USB Memory
  • RUF3-HSTVSecurity USB Memory
  • RUF3-HSLTVSecurity USB Memory