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Magma ExpressBox 4 (1U)

A powerful and scalable expansion solution built for industrial environments - most reliable PCIe expansion solution designed for industrial environments
MFR# EB4-1U-X8G2
Magma ExpressBox 4 (1U)
No interest if paid in full within 12 months Learn more
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Magma ExpressBox 4-1U provides a rock-solid upgrade path to increase the number of PCI Express slots available to your server. You can maintain a consistent server configuration, while adding more I/O capacity and scalability with a Magma expansion chassis like ExpressBox 4-1U. Now, an almost unlimited number of PCIe cards can be attached to a single server. Moving PCIe cards outside the host computer to an expansion chassis allows server manufacturers to reduce the amount of power required in the server.

And, because ExpressBox 4-1U monitors temperature, power, and fans with alerts using SNMP and audible alarms, you can feel confident that your entire systems remains reliable, available and serviceable.

Maximize Limited Rack Space

ExpressBox 4-1U is the only expansion solution that provides four full-length PCI Express slots in a 1U rack-mount chassis and includes a hot-swappable redundant power supply and hot-swappable cooling fans. Additionally, the PCIe slots are hot-pluggable so you can replace a defective card without shutting down the system.

Easy Installation

ExpressBox 4-1U consists of a PCIe host card, a cable and 1U rack-mount enclosure. It is automatically configured by the system BIOS and all slots appear transparent to the host computer. ExpressBox 4-1U is designed to fit conveniently into a typical 4-post rack cabinet. Card retainers inside the enclosure keep your cards securely in place during transportation.

PCI Express Hot-Plug Support

Easily remove and replace PCIe cards without powering downing the server:

  • Initiate a hot-swap request without affecting the operation of the entire system
  • Any of the PCIe cards can be stopped and replaced with a replacement card
  • All slots designed to protect the PCIe card electrically in the event of its surprise removal

PCI Express Hot-Plug Support

  • Utilizes the SNMP protocol to monitor and report normal operation parameters as well as alerts and failure events
  • Audible alert for over temperature, fan failure or power supply failure


  • Add four PCIe slots in only 1U of rack space
  • Attach full-length PCIe cards to servers with limited card space
  • Multiple expansion chassis can be daisy-chained
  • Keeps your I/O configuration consistent from server to server
  • Protects your investment in expensive I/O cards during server migrations and upgrades
  • Mission critical solution provides notifications of failures with SNMP trap and audible alarm
  • Minimize downtime by servicing problems immediately
  • PCIe Slots can be turned off without powering down system
  • Reduce power consumption and rack space


  • Automatically configured by the system BIOS
  • Automatic power-up control by computer
  • Easily visible LEDs indicate correct installation
  • High-speed x8 PCIe connection to server
  • Hot-pluggable PCIe slots support full-length cards
  • Slots support any combination of x1, x4, x8 and x16 PCIe cards
  • Sliding card carriage provides access to PCIe cards without removing enclosure from cabinet
  • Adjustable card retainers hold cards in place
  • SNMP agent monitors critical components and slots for power condition
  • Includes auxiliary power cables for high wattage cards
  • Hot-swappable fans and power supplies

Additional Information

Condition New
Chassis 19-in Rackmount
Rack Spaces 1u

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