Motherboards are limited to 8 slots maximum - at the most. It's getting hard to find even that many. Passive Backplanes can provide up to 20 slots. 20 is the most that will fit within a 17" wide rack mount chassis. You can build a back...
http://www.chassis-plans.com/backplanes.html
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While "real" motherboards are the norm for PCs, there is another similar (but yet different) way to construct a PC. In many custom machines--high-end servers and the like--instead of having an integrated motherboard, a passive backplane design is used.
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www.pcguide.com/ref/mbsys/mobo/formBackplane-c.html
www.pcguide.com/ref/mbsys/mobo/formBackplane-c.html
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You are here: Home > PICMG Passive Backplane ... PICMG 1.3 Backplane ... Complying with PICMG 1.3 standards, these series of full-sized SBCs feature comprehensive backplane support and are the most flexible and expansible solutions for industrial slot-hungry applications.
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buy.advantech.com/10/PICMG-Passive-Backplane/IPB.pc.htm
buy.advantech.com/10/PICMG-Passive-Backplane/IPB.pc.htm
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We offer both motherboard and passive backplane rack mount computers as well as 2U, 4U and other rackmount pc cases. We are a full service industrial computer provider. Our industrial computers are populated with the industries most trusted component manufacturers such as Intel, Sony, Seagate, etc.
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www.superlogics.com/industrial-computers/rack-mount-pc-...
www.superlogics.com/industrial-computers/rack-mount-pc-computer/269.htm
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Follow TRENTON on Twitter, Facebook and LinkedIn. ... New Four Segment PICMG® 1.3 Backplane (TRENTON BP4FS6890) Tackles Tough Cluster Computing Applications. ... PICMG 1.3 Backplane...
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www.trentontechnology.com/
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A passive-backplane architecture solves these problems by completely dispensing with the ... sion to define an industrial PCI/ISA passive backplane ...
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www.picmg.org/pdf/pcishort.pdf
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Core Systems is a Manufacturer of COTS and Custom Integrated Industrial Computer, Rackmount LCD Monitor Display and Rackmount Computer Products. ... You are here: Home : Rackmount Industrial Computer, LCD Display and Rackmount Server System Components : Passive Backplane...
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www.coresystemsusa.com/SEBP12-6_5_12_Slot_PCI_Express_P...
www.coresystemsusa.com/SEBP12-6_5_12_Slot_PCI_Express_PCI-X_backplane.php
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7-slot PCI-Express/ PCI-X Backplane (new) ... You are here: Home : Rackmount Industrial Computer, LCD Display and Rackmount Server System Components : Passive Backplane...
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www.coresystemsusa.com/passive-backplanes.php
www.coresystemsusa.com/passive-backplanes.php
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Companion high quality passive and active backplanes up to 20 slots provide you with virtually any slot combination of PCI-Express, PCI and ISA slots including x16 graphics compatible PCI-Express. Our Single Board Computers are designed and manufactured in the USA.
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www.single-board-computer.com/
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