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ExpressBox 4 (1U)

A powerful and scalable expansion solution built for industrial environments

ExpressBox 4 (1U) is the most reliable PCIe expansion solution designed for industrial environments where serviceability and availability features are required.

    SKU: eb4-1u-x8g2 / eb4-1u-x8g2-ext
    Featured, In Defense and Aerospace

    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
    EB4-1U-X8G2 4 Slot PCI Express Expansion System, 1U form factor
    EB4-1U-x8G2-EXT Additional ExpressBox 4-1U for daisy-chaining
    SUBCBL3IP Substitute 3m iPass cable
    SUBCBL7IP Substitute 7m iPass cable
    60-00038-01 Replacement 1m iPass cable
    01-05990-00 Replacement hot-swappable fan module
    40-00024-01 Replacement redundant power supply module
    01-05996-03 Replacement auxillary power cable
    01-04978-03 Replacement host card (x8 PCIe Gen2)
    • PCI Express Bus Specification Revision 2.0
    • PCI Hot-Plug Specification 1.1
    • 4 PCIe slots (two on each side of backplane)
    • x8 PCIe Gen 2 slot speeds (x16 connectors)
    • Hot-Pluggable slots (75W per slot)
    • Use AUX power cable for higher wattage cards
      NOTE: Hot plug features will be managed by BIOS instead of being managed by the Operating System. If the BIOS does not support Hot-Plug, then the hot-plug feature / capability on any Expansion units will not function at all
    Cable 1-meter iPass included (3m or 7m optional)
    Interconnect Bandwidth 40Gbps (PCIe x8 Gen 2)
    Rack-mount 1U Rack-mount
    Dimensions 19"W x 1.75"H x 28"D
    Weight 27 lbs (12.27 kg)
    Rackslides 24” pre-installed rack-slides
    System Cooling
    • Three hot-swappable fans
    • One fan in each power supply module
    Monitoring Features
    • SNMP Version 1
    • Audible Alarm for temperature, fan, power failure
    Power Supply
    • 420 Watt Redundant, Hot-swappable
    • AC Input: 100-240 VAC, 50-60 Hz
    • AC Input Current: 6.0 Amps
    • 12V @ 35 Amps
    • +5Vsb @ 3.0 Amps
    Ambient Temperature 0º to 70º C
    Storage Temperature -55º to 125º C
    Relative Humidity 0% to 90% non-condensing
      100,000 Hours
    Regulatory Compliance
    FCC Class A Verified
    RoHS Compliant
    CE Certified
    Supported Operating Systems
    • Windows
    • Mac OS X
    • Linux
    • Solaris
    Package Contents
    • Four PCI Express slots
    • Cooling fans (Hot-Swappable)
    • Power supplies
    • Adjustable PCIe card retainers
    • PCI Express card slot opening
    • iPass connector to host computer
    • iPass connector to daisy-chain expansion chassis
    • RJ45 Ethernet connection for SNMP
    • Power cord sockets
    • Hot-swappable fans
    • Status Indicators
    • Hot-swappable power supplies
    Hardware Included
    • iPass cable
    • PCIe host card


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