Specimen common stock certificate of registrant



 Exhibit 4.2 
 

 
  
 Exhibit 4.2

 COMMON STOCK 
 NUMBER 
 RSI-0201 
 COMMON STOCK 
 SHARES 
 CUSIP 82706L 10 8 
 SEE REVERSE FOR CERTAIN DEFINITIONS 
 Rackable Systems, Inc. 
 INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 
 THIS CERTIFIES THAT 
 SPECIMEN 
 is the record holder of 
 FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK, $0.001 PAR VALUE PER SHARE, OF 
 Rackable Systems, Inc.

 Transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this Certificate
properly endorsed. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. 
 WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. 
 DATED: 
 SECRETARY 
 RACKABLE SYSTEMS, INC. 
 INCORPORATED 2002 DELAWARE 
 PRESIDENT AND CHIEF EXECUTIVE OFFICER 
 COUNTERSIGNED AND REGISTERED: 
 AMERICAN STOCK TRANSFER & TRUST COMPANY 
 (New York, New York) 
 By Transfer Agent and Registrar 
 Authorized Signature 
 NAME CHANGED TO 
 SILICON GRAPHICS INTERNATIONAL CORP. 
 MIDWEST BANK NOTE CO 







 

 
  
 Rackable Systems,
Inc. 
 The Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences
and relative, participating, optional or other special rights of each class of stock or series thereof and the qualifications, limitations or restrictions of stock preferences and/or rights. Such requests shall be made to the Corporation’s
Secretary at the principal office of the Corporation. 
 The following abbreviations, when used in the inscription on the face
of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: 
 TEN COM – as tenants In common 
 UNIF GIFT MIN ACT– Custodian 
 TEN ENT – as tenants by the entireties 
 (Cust) (Minor) 
 JT TEN – as joint tenants with right of survivorship
and not as tenants in common under Uniform Gifts to Minors 
 Act 
 (State) 
 UNIF
TRF MIN ACT– 
 Custodian (until age ) 
 (Cust) 
 under Uniform Transfers 
 (Minor) 
 to
Minors Act 
 (State) 
 Additional abbreviations may also be used though not in the above list. 
 For Value received, hereby
sell, assign and transfer unto 
 PLEASE INSERT SOCIAL SECURITY OR OTHER 
 IDENTIFYING NUMBER OF ASSIGNEE 
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) 
 Shares 

of the Common Stock represented by the within Certificate, and do(es) hereby irrevocably Constitute and appoint 
 Attorney 
 to
transfer the said stock on the books of the within named Corporation with full power of substitution in the premises. 
 Dated

 X 
 X 
 NOTICE: 
 THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

 SIGNATURES GUARANTEED: 
 By 
 THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS,
SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.