ROBEN-3TX Thunderbolt

(3) Slot Rack-mountable Expansion

From initial concept, the ROBEN-3TX has been precision engineered to be the “perfect sidekick” for connecting PCIe cards to the new Apple Mac Pro and the next generation of Thunderbolt workstations.

Key Features

  • Cooling 33.4 CFM Fan
  • Slots 3 PCIe Slots
  • Power 520 Watts
  • Speed 20 Gbps
  • Extras (2) 5.25" Expansion Bays

The Ultimate Sidekick for All of Your Creative Needs. Connect (3) PCIe Cards + (2) 5.25” Option Bays.


Part # roben-3tx

Engineered to Magma’s mission critical standards for performance and reliability, ROBEN-3TX features three (3) full-length, full-height PCIe slots with a robust, high speed backplane and Thunderbolt 2. The rack-mountable aluminum chassis was designed for integrated removable storage expansion, providing flexibility with two customer configurable 5.25” expansion bays, a fanless 520-watt power supply, auxiliary power, and features Magma’s exclusive quiet cooling control. From initial concept, the ROBEN-3TX Thunderbolt configuration has been precision engineered to be the “perfect sidekick” for the new Apple Mac Pro and other Apple and PC devices.

Fuel your creative genius by adding a host of specialty PCIe cards to any Thunderbolt 2-equipped computer to achieve expanded performance in every working environment. ROBEN-3TX’s patented performance optimizing backplane seamlessly integrates PCIe expansion, storage, and Thunderbolt 2 connectivity and ensures that all devices installed in the system operate with the maximum possible speed, and minimum potential for data loss. This design gives audio engineers, video producers, game developers, and graphic designers the same level of data fidelity that had previously been reserved for defense and aerospace industry projects.

With the fastest card-to-card communication, integrated high capacity storage, and the largest expansion capacity on the market, ROBEN-3TX sets the bar for high-end Thunderbolt 2-based computing.


  • Attach PCIe cards to Thunderbolt 2-enabled computer
  • Extension of PCI Express signals outside the computer
  • Daisy-chain or end-point device


  • Easy Plug and Play installation
  • Use any combination of x1, x4, x8 and x16 PCIe cards
  • Magma’s exclusive quiet cooling control
  • Auxiliary power cables
  • Fanless 520-watt power supply

ROBEN-3TX Specifications

ROBEN-3TX Thunderbolt 2 to PCIe Expansion - 3 Slot
  • (3) Full Length/Full Height PCI Express Slots
    • 3 slots x8 PCIe 2.0 electrical; x16 mechanical
Cable Required Thunderbolt (Sold Separately)
Interconnect Bandwidth 20 Gbps Bi-directional
Material Aluminum Chassis
Dimensions 17” L x 14.25” W x 3.48” H (432mm x 363mm x 88.4mm)
System Cooling
  • (1) 80mm 33.4 CFM Expansion Card/Backplane Fan
  • (1) Variable speed thermistor control option (or full speed)
Power Supply
  • Fanless 520W, 100-240 VAC, 50-60HZ
  • Auxiliary power cables:
    • (4) 4-pin Molex connectors
    • (2) 6-pin + 2 PCIe connectors
    • (2) PCIe Connectors
Ambient Temperature 0º to 50º C
Storage Temperature -40º to 125º C
Relative Humidity 10% to 90% non-condensing
Regulatory Compliance
FCC Class A Verified
RoHS Compliant
CE Certified
Supported Operating Systems
  • Windows 7, 8
  • Mac OS X Yosemite
30 day money back guarantee
1 year return to factory
Package Contents
  • Power Indicator
  • Rackmount Enclosure
  • Power Cord Socket
  • Thunderbolt 2 Ports
  • PCIe Card Slot Openings
Hardware Included
  • U.S. Power Cord

ROBEN-3TX Frequently Asked Questions

Is a Thunderbolt cable included?

The Thunderbolt cable is sold separately.

Do I need any special Firmware, Software, or Driver?

No firmware, software or driver is required from Magma, but you may need an updated driver for your PCIe card.

What types of PCIe cards can be used with the ROBEN-3TX?

Check the Thunderbolt PCIe Card Compatibility for a list of cards that have Thunderbolt 2 Compatible drivers. If your PCIe card is not on this list, contact the card manufacturer to ask if they have a Thunderbolt 2 Compatible driver.

Can the Magma Thunderbolt 2 Interface add-in card be used in a Mac Tower?

No, it will not work as an add-in PCIe card in a Mac Tower.

Do older Thunderbolt devices on a Thunderbolt 2 daisy chain affect performance?

Yes. If you have a mix of generations on a Thunderbolt 2 daisy chain, make sure that the Thunderbolt devices sit after the Thunderbolt 2 devices on the chain. Anything placed after a first generation Thunderbolt device will operate at Thunderbolt speeds.

ROBEN-3TX Docs and Drivers

Looking for more information to download or print? Product drivers? Below you will find everything from data sheets to warranties. If you still cannot find what you are looking for, please contact Magma directly and we will assist you.


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Drivers and Utilities:

  • There are currently no drivers or utilities assigned to this product

If you are having trouble with your product installation please go to our drivers and utilities knowledge base.
If you still can't find what you are looking for, please contact us through our customer support hub.

Recommended Controller Cards:

Please see our Thunderbolt PCIe Card Compatibility list for controller card options.