7 Slot PCI Expansion

7 slot PCI expansion chassis

Protect your investment and keep your PCI cards in commission with our 7 slot PCI expansion chassis.  Expand the life of your PCI cards by keeping them protected and running in optimal conditions.

    SKU: p7r4

    Got a small footprint computer and full-sized PCI cards? Don’t want to lose your investment in pricey PCI cards that don’t fit the new computer? Simply need more PCI slots or storage space? Are your full-sized, power-hungry, high-heat-generating PCI cards dragging your computer down? You can install practically any PCI card into the Magma PCI Expansion System and connect it to your new or old server or desktop computer through a variety of Magma host cards. The Magma 7 Slot PCI Expansion System is a 4U, rack mountable, chassis that allows you to plug-in up to seven full-sized power-demanding PCI cards and up to seven 3.5” hard drives in an external enclosure.

    Increase I/O Capability

    There are numerous performance and functionality hungry professionals that simply need more PCI slots than a typical computer provides. Even with the introduction of more robust desktop computers and servers, increased I/O capability is still required. If you have a powerful application that requires the use of several PCI cards, increase the number of PCI slots in your system with a Magma PCI Expansion System.

    Flexible System

    The use of computer specific host cards makes using your unique PCI cards and vital data as simple as “Plug & Play” because all you need to do is to connect the Magma PCI Expansion System to the host card for your computer and turn it on. Use the same PCI cards on your laptop as you do on your desktop or server – just add a Magma CardBus or ExpressCard and connect the cable. The auto-switching power supply even allows you to work internationally by simply adding a power cord plug adapter.

    Configuration Control

    Setting up your PCI cards and data in one chassis provides you an opportunity to use a consistent hardware configuration – regardless of what type of computer is available. Being able to “hit the ground running” is vital to every successful venture. Being able to use “the same PCI cards,” regardless of location also reduces project risks. Host cards are available for the following systems: (1) Laptop: CardBus, ExpressCard/34, or ExpressCard/54, (2) Desktop/Server: 32-Bit PCI or x1 PCI Express.


    • Increase number of PCI slots without replacing your computer
    • Attach full-height PCI cards to computers with low-profile slots
    • The only solution for adding multiple PCI cards to mobile computers
    • Multiple expansion systems can be connected to a single computer
    • Offers a consistent PCI configuration allowing easy host computer upgrades
    • Patented technology provides low latency and high through-put
    • Proven method to increase PCI capability without losing performance
    • Non-enclosed board sets are available for OEMs and System Integrators to utilize their own enclosure


    • Easy Plug and Play installation
    • PCI and PCI Express® host card provides easy connection to desktop computers and servers
    • CardBus and ExpressCard modules provide connection to your favorite laptop computer
    • Includes 1-meter expansion cable
    • 7 slot PCI backplane (32-bit)
    • All slots support full-length or shorter universal and legacy 5 volt only PCI cards
    • 400W Standard or 400W Hot-Swappable Redundant Power Supply
    • Dedicated fan for cooling PCI cards
    • Optional PCI card hold down mechanism prevents cards from being dislodged during transportation
    • Optional drive cage for mounting up to eight internal drives inside chassis
    • Optional rack slide kit for rack cabinet installation
    P7R4 7 Slot 32/33 Rack-mount enclosure with 500W PS
    • 7 PCI slots (32-bit/33Mhz only)
    • PCI Local Bus Specification: Revision 2.3
    • PCI Bridge Architecture Specification: Revision 1.2
    Cable 1-meter PCI expansion cable (optional 1.5-meter length)
    Interconnect Bandwidth 132 MB/sec (Theoretical Max of PCI 32/33) or 264MB/sec (Theoretical Max. of PCI 64/33)
    Rackmount 4U Black Rack-mount
    Dimensions 19"W x 7"H x 17.7"D
    Weight 24 lbs or 11.804 kg
    Emissions Class A FCC
      Removable/cleanable air filter
    System Cooling
    • One large 82.5 CFM backplane fan
    • One fan in power supply
    Host Connection & Power Consumption
    Universal PCI 32/33 0.63W max; 5V @ 0.125A
    Low Profile PCI (64/33) 0.86Wmax; 3.3V @ 0.25A
    x1 PCI Express® 0.69W max; 3.3V @ 0.21A
    CardBus (PCMCIA) 0.42W max; 3.3V @ 0.125A
    ExpressCard 0.81W max; 3.3V @ 0.21A; 1.5V @ 0.08A
    Rack Installation
      Optional rack slide kit
      Optional PCI card hold down kit
    Hard Drive Support
      Optional Drive Cage
    Power Supply
    550W Standard
    • AC Input: 100-240VAC
    • Input Frequency: 50-60HZ
    • Input Current: 10.0A Max
    • DC Output: 550Watts Max
    • +12V 36.0A maximum
    • -12V 3.0A maximum
    • +3.3V 28.0A maximum
    • +5V36.0A maximum
    • +5VSB 3.0A maximum
      Total power on +3.3V and 5V must not exceed 200W max
    Ambient Temperature 0º to 50º C
    Storage Temperature -20º to 60º C
    Relative Humidity 5% to 85% non-condensing
      100,000 hours
    Regulatory Compliance
    FCC Class A Verified
    CE Certified
    Supported Operating Systems
    • Windows
    • Mac OS X
    • Linux
    • Solaris
    Package Contents
    • Seven slot PCI backplane
    • Cooling fan assembly
    • Power supply
    • Space for optional drive bays
    • 400W power supply (optional redundant power)
    • Cable connections (one for 32-bit)
    • PCI card slot openings
    Hardware Included
    • Expansion cable
    • Host interface cards

    Is the power supply auto switching?

    Yes, all Magma power supplies are auto switching.

    Does it work with Mac and Windows?

    This unit works with both Mac and Windows operating systems.

    Can I use it in a server environment?

    Yes, this unit will work in a server environment. We also offer a redundant power version.

    Is it rack mountable?

    Yes, this unit is rack mountable in any ATX racks.

    Can I fit PCIx, 64 bit cards in it?

    Yes, the slots provided are 32 bit universal slots. They can house 64 bit cards.

    Support: support@onestopsystems.com or 877-438-2724


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    Drivers and Utilities

    7 Slot Expansion Driver_Cardbus

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