LaserCut 5.3 White USB Authorization Dongle (Used)

LASER SOFTWARE | LEGACY PARTS

LaserCut 5.3 White USB Authorization Dongle (Used)

Keep your older laser engraving or cutting machine operating with a replacement white USB authorization dongle for compatible LaserCut 5.3 software installations.

This hardware security key, also known as a USB SoftDog, is used with select legacy Leetro motion controllers. When matched with the correct software and controller configuration, it enables functions restricted in LaserCut demo mode, including saving projects and communicating with the laser machine.

Rabbit Laser USA occasionally recovers these dongles when upgrading older laser machines to newer Ruida control systems. Recovered units are tested before being offered for resale, providing a replacement option for customers who continue to operate legacy equipment.

Key Features

• LaserCut Authorization: Provides the USB hardware key required for full functionality with compatible LaserCut installations.
• Legacy Leetro Support: Used with select MPC-series laser motion controllers.
• USB Connection: Plugs directly into the computer running LaserCut software.
• Used Replacement Component: Recovered from older laser equipment during controller upgrades.
• Limited Inventory: Availability depends on compatible parts recovered from older equipment.
• Technical Support: Rabbit Laser USA can help review your existing controller and software configuration before purchase.

Product Specifications

Product Type	USB Software Authorization Dongle
Software	LaserCut 5.3
Dongle Identification	WHCX-LASER1
Color	White with Blue Band
Condition	Used
Connection	USB
Controller Family	Select Legacy Leetro MPC Controllers
Rabbit Laser USA SKU	313
Quantity Included	One Used USB Authorization Dongle
Availability	Limited / Occasional Restocking

Controller Compatibility

The white LaserCut authorization dongle has historically been used with several Leetro motion controllers. Rabbit Laser USA's legacy compatibility references include:

• MPC-03 internal card motion controllers.
• MPC6515 with firmware 4.1.2.0 and newer.
• MPC6525 controller family.
• MPC6535 controller family.
• MPC6565 controller family.
• MPC6575 controller family.

Important: This list represents historical compatibility references and does not guarantee compatibility with every firmware revision.

The exact controller model, firmware version, installed LaserCut software, and associated drivers must be compatible with the authorization key. Please contact our technical support team if you are unsure whether this dongle will work with your system.

White vs. Green Authorization Dongles

Older Leetro laser systems used different USB authorization keys depending on their controller and software configurations.

The white dongle is commonly associated with later MPC-series controllers and certain newer MPC6515 firmware revisions. Green dongles were used with some earlier MPC6515 installations.

Dongle color alone is not enough to determine compatibility. The correct authorization key must match the complete controller and software configuration.

If your original dongle is green, review our Green LaserCut Authorization Dongle listing or contact our support team before ordering.

Condition & Availability

This is a used authorization dongle recovered from an older laser system. Recovered components are tested before being offered for resale and may show minor cosmetic wear from previous use.

These components are no longer part of our current machine lineup. Inventory is limited and may be replenished occasionally as older equipment is upgraded or retired.

Out of Stock? Contact Rabbit Laser USA to ask about recently recovered inventory or alternative options for your existing laser control system.

Before Ordering

• Confirm the exact Leetro controller model installed in your machine.
• Verify your controller firmware version and LaserCut software installation.
• Compare the color and identification marking on your existing authorization key, if available.
• Contact Rabbit Laser USA if you need help identifying the correct dongle.
• This listing includes one used authorization dongle only. Software, controllers, and other accessories are not included.

Return Policy: Because this product functions as a software authorization key, opened-package returns and refunds are restricted under our store policy, except where required by applicable law. Please confirm compatibility before purchasing.