##### 



Exhibit 10.104
 
 
  
 27
 27
  IBM Specification/Attachments(if applicable)
    
    Engineering Change Level
    
    DescriptionNA
    
    Version 1.0
    
    SilkWorm 2000 Family Product
Specification 90-0000001-01Attachment B
    
    Dated 8/06/2001
    
    Supplier Quality Attachment[**]
    
    Version 10
    
    Packaging and Materials
Handling Specification[**]
    
    [**]
    
    [**]NA
    
    Version 2.0
    
    Brocade Fabric OS
Publication 53-0001487-03NA
    
    Version 2.1
    
    Brocade WebTools Reference
Manual Publication
53-0001490-02NA
    
    Version 2.0
    
    Brocade Zoning Reference
Manual Publication
53-0001488-02NA
    
    Version 1.0
    
    SilkWorm 3800 Product
Specification  90-0000077-01NA
    
    Version 1.1
    
    SilkWorm 3900 Product
Specification 
79-0000002-01NA
    
    
    
    SilkWorm 3200 Product
Specification  Reference
the Silkworm 3800 ProductNA
    
    Dated: March 8, 2002
    
    SilkWorm 12000 Product
Specification  79-0000001-01NA
    
    Version 4.1.2
    
    Brocade Fabric OS
Reference 53-0000519-06NA
    
    Version 3.1.0
    
    Brocade Fabric OS
Reference 53-0000500-02NA
    
    Version 1.0
    
    SilkWorm 24000 Product
Specification dated Nov 7,
2003NA
    
    Dated: December, 2003
    
    SilkWorm 3250 Product
Specification 
79-0000006-01NA
    
    Dated: December, 2003
    
    SilkWorm 3850 Product
Specification 
79-0000005-01
 
 [**]
    
    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 1 of 16




---



##### 



IBM Specification/Attachments(if applicable)
    
    Engineering Change Level
    
    DescriptionNA
    
    Version 1.0
    
    SilkWorm 4100 Product
Specification  79-0000007-01NA
    
    Dated: July, 2004
    
    SilkWorm AP7420 Product
Specification  79-0000003NA
    
    Version 1.0
    
    Brocade Fabric OS 4.4
SoftwareSpecification 
79-0000010-01NA
    
    Version 1.0
    
    Brocade XPath OS v7.3.0
Functional Specification
dated September, 2004NA
    
    Version 1.1
Dated: February 2005
    
    SilkWorm 48000 Hardware
Specification 
79-0000011-02NA
    
    Version 1.1
Dated: February 28, 2005
    
    SilkWorm 200E Hardware
Specification 
79-0000009-01NA
    
    Version 1.0
Dated: February 2005
    
    Brocade Fabric OS 5.0.1
SoftwareSpecification 
79-0000012-01N/A
    
    Version 1.2
Dated: September, 2005
    
    SilkWorm 7500 External
Specification 
79-0000016-01N/A
    
    Version 1.1
Dated: August, 2005
    
    SilkWorm 4900 External
SpecificationN/A
    
    Version 1.3
Dated: September, 2005
    
    FR4-18i FCR-FCIP Port Blade
External Hardware
SpecificationN/A
    
    Version 1.21
Dated: October 14, 2005
    
    Fabric OS 5.1.0 External
Software Specification[**]
    
    [**]
    
    [**][**]
    
    [**]
    
    [**]
    Accepted and Agreed To:
    
    Accepted and Agreed To:International Business Machines Corporation
    
    Brocade Communications Systems, Inc.By:
    
    
    
    
    
    By:Authorized Signature               Date
    
    Authorized Signature                DateType or Print Name
    
    Type or Print NameTitle & Organization
    
    Title & Organization
 
 [**]
    
    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential
treatment has been requested with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 2 of 16




---



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    [**]
 
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    Certain information on this page
has been omitted and filed separately with
the Securities and Exchange Commission.
Confidential treatment has been requested
with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 3 of 16




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    Certain information on this page
has been omitted and filed separately with
the Securities and Exchange Commission.
Confidential treatment has been requested
with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 4 of 16




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    Certain information on this page
has been omitted and filed separately with
the Securities and Exchange Commission.
Confidential treatment has been requested
with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 5 of 16




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 [**]
    
    Certain information on this page
has been omitted and filed separately with
the Securities and Exchange Commission.
Confidential treatment has been requested
with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 6 of 16




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    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.  Amendment 27 to SOW 1
Confidential InformationPage 7 of 16




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    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.  Amendment 27 to SOW 1
Confidential InformationPage 8 of 16




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    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions. Amendment 27 to SOW 1
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    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 10 of 16




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    Certain information on this
page has been omitted and filed
separately with the Securities and
Exchange Commission. Confidential
treatment has been requested with
respect to the omitted portions.
 Amendment 27 to SOW 1
Confidential InformationPage 11 of 16




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    Certain information on this
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separately with the Securities and
Exchange Commission. Confidential
treatment has been requested with
respect to the omitted portions.
 Amendment 27 to SOW 1
Confidential InformationPage 12 of 16




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    Certain information on this page has been omitted and filed separately with the Securities and
Exchange Commission. Confidential treatment has been requested with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 13 of 16




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    Certain information on this page has been omitted and filed separately
with the Securities and Exchange Commission. Confidential treatment has
been requested with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 14 of 16




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    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions. Amendment 27 to SOW 1
Confidential InformationPage 15 of 16




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    Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions. Amendment 27 to SOW 1
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