Document:

F-3

EXHIBIT 4.6  

December 31, 2007 

JK&B Shalom II LLC 
JK&B Capital III,
Civil Law Partnership 

Ladies and Gentlemen: 

        We
refer to the Exchange Right Agreement dated as of May 8, 2003 by and among LanOptics Ltd.
(the “Company”), EZchip Technologies Ltd. (“EZchip”) and you (the
“Agreement”). Each capitalized term used but not defined in this letter
agreement shall have the meaning ascribed to it in the Agreement. 

        In
order to facilitate the exercise of the Exchange Right, we propose the following: 

	1.  	If
EZchip and the Company receive Exchange Notices from all the JK&B Shareholders and all
the Goldman          Shareholders no later than the close of business, Israel time, on
December 31, 2007 (the "Deadline"),          then in addition to the terms and conditions
of the Agreement, the provisions of this letter agreement          shall apply with
respect to the JK&B Shareholders.

	2.  	EZchip
and the Company shall promptly comply with the provisions of Section 2.6 of the
Agreement.  EZchip, the          Company and the JK&B Shareholders shall all use
reasonable efforts to obtain all required consents and          approvals and cause the
Closing to occur as soon as practicable.  Thereafter, the Company shall use
         reasonable efforts to cause the Registration Statement with respect to the JK&B Shareholders'
         Registrable Securities to be filed as promptly as practicable after the Closing.

	3.  	Prior
to the delivery of the Exchange Notice, the JK&B Shareholders shall have engaged an
investment banking          firm for the purpose of underwriting and/or distributing the
Registrable Securities (the          "Underwriter"):

	 	3.1. 	Notwithstanding
the transfer restrictions contained in Section 5.1 of the Agreement, the JK&B Shareholders
may                      publicly sell in an offering underwritten and/or managed by the
Underwriter,                      all or any portion of their Registrable Securities, at
any time following the                      effectiveness of the Registration Statement
with respect to the JK&B                     Shareholders' Registrable Securities;

	 	3.2. 	During
the 60 day period following the effectiveness of the Registration Statement (the "Initial
Period"), the                      JK&B Shareholders may not sell Registrable Securities
in open market                      transactions;

	 	3.3. 	During
the Initial Period, the management of the Company shall (i) use best efforts to refer
potential                      purchasers of Shares to the JK&B Shareholders, and (ii)
reasonably cooperate                      with the JK&B Shareholders in making
presentations to potential purchasers of                      the Registrable Securities
in order to allow them to publicly dispose of the                      Registrable
Securities in the manner noted in Section 3.1; and

	 	3.4. 	Following
the Initial Period, sales by the JK&B Shareholders of Registrable Securities in open
market                      transactions shall be permitted subject to the transfer
restrictions contained                      in Section 5.1 of the Agreement.

	4.  	The
Exchange Ratio relevant for this transaction determined in accordance with the provisions
of the Agreement          will be 1 (one) Share of the Company for each 4 (four) shares
of EZchip (on a fully-diluted,          as-converted basis).

	5.  	Except
as explicitly set forth in this letter agreement, nothing contained in this letter
agreement shall          detract from any of the provisions of the Agreement, which shall
remain in full force and effect.          Without limiting the generality of the
foregoing, the Company hereby reaffirms its representations in          Section 3.5 of
the Agreement (except that as of the date of this letter agreement, the issued and
         outstanding share capital of the Company consists of 18,312,245 Ordinary Shares
and the Company has          reserved 119,000 Ordinary Shares for issuance upon the
exercise of share options and vesting of          restricted share units granted or
available for future grants under the Plans and 666,300 Ordinary          Shares for
issuance upon exercise of outstanding warrants), and each JK&B Shareholder reaffirms its
         representations in Section 4.2 of the Agreement.

	6.  	This
letter agreement shall come into effect only if all the JK&B Shareholders sign and return
it by the          Deadline, and all the Goldman Shareholders sign and return a similar
letter agreement with respect to          the Goldman Shareholders' Registrable
Securities (the "GS Letter Agreement") by the Deadline.  If this          letter
agreement is not signed and returned by all JK&B Shareholders and the GS Letter Agreement
is not          signed and returned by all Goldman Shareholders by the Deadline, the
offer contained herein shall          automatically and immediately be null and void.

2

        If
you wish to accept the terms of this letter agreement, please sign one copy and return it
to the Company no later than the Deadline. 

			Sincerely,

LANOPTICS LTD.

By: /s/ Dror Israel
——————————————

Name: Dror Israel

Title:   CFO

3

We accept the terms of the above
letter agreement dated December 31, 2007. This acceptance shall also be deemed to
constitute an Exchange Notice. 

		
	JK&B Shalom II LLC 
	By:	JK&B Capital, L.L.C.
	Its:	Manager
	 
	 	By: Thomas M. Neustaetter
         
——————————————————
         
Thomas M. Neustaetter, its Member

		
	JK&B Capital III, Civil Law Partnership 
	By:	JK&B Capital, L.L.C.
	Its:	Managing Partner
	 
	 	By: Thomas M. Neustaetter
         
——————————————————
         
Thomas M. Neustaetter, its Member

4rrd193583_23203.html

Exhibit 10.1
       January 31, 2008
Mr. Jonathan C. Crane
80 Stevens Road
Hanover, NH  03755

Dear Jonathan:
This Letter Agreement (the "Agreement"), reflects our mutual understanding with respect to your resignation from SAVVIS, Inc. (the "Company", and together with its subsidiaries and their affiliates, "SAVVIS") and sets forth the payments and benefits that you will be eligible to receive under this Agreement.
 
       1. Resignation. You have advised us that you will resign from the Board of Directors of the Company effective as of the close of business on February 1, 2008, and from your position as President of the Company and from any other executive officer or director role in which you have served with the Company and SAVVIS effective as of the close of business on March 1, 2008 (the "Resignation Date"). Effective on the Resignation Date, you will no longer be a member of any board or internal management committee of the Company or SAVVIS and you will have no authority to take any action on behalf of or otherwise bind the Company or SAVVIS. 
       2. Advisor Role. You agree to serve as an advisor to the Company from your Resignation Date through May 31, 2008 (the "Transition Period"). In your role as an advisor, you will work with the Senior Vice President of Sales to transition your responsibilities, including working with key customers and strategic partners, and you will handle various other projects as requested by the Chief Executive Officer.  
 
       3. Payments Through the Transition Period. Until the close of business on the last day of the Transition Period, (i) you will receive Five Thousand Dollars per month as salary (less applicable withholdings and deductions), paid in accordance with the Company's payroll practices in the ordinary course; (ii) your Options, Restricted Stock Units and Restricted Preferred Units (as defined in your Employment Agreement with the Company dated March 29, 2006, as amended in the First Amendment dated May 30, 2006 and the Second Amendment dated August 31, 2006 (collectively the "Employment Agreement")) will continue to vest pro-rata as set forth in your Employment Agreement; and (iii) you will continue to be eligible for benefits at the level and of the type you currently receive.  Notwithstanding anything herein or in your Employment Agreement to the contrary, you agree that you will not be entitled to earn any cash bonus during the Transition Period.  
 
       4. Employment Agreement. The Company hereby confirms and agrees that your resignation hereunder shall constitute a termination of employment with the Company by reason of "Good Reason" under the terms of your Employment Agreement. Accordingly, you will receive the benefits and severance outlined in the Employment Agreement commencing on June 1, 2008, subject to any conditions and restrictions in your Employment Agreement. In addition, the restrictive covenants in your Employment Agreement, including but not limited to, (i) the covenants not to compete with SAVVIS, (ii) the non-solicitation or hiring of employees, (iii) the non-solicitation of customers, and (iv) the protection of SAVVIS confidential information, will remain in full force and effect. Notwithstanding anything to the contrary in your Employment Agreement, the Company hereby confirms and you agree that you will receive $35,416.00 (less applicable withholdings and deductions) on June 1, 2008, which represents payment of your pro-rata share of your 2008 annual bonus.
       5. 2007 Cash Bonus.  The Company hereby confirms and you agree that you will receive a cash bonus of  $191,250.00 for the 2007 year under the Company's 2007 Annual Incentive Plan (the "Plan"), which will be paid in accordance with the terms of the Plan. 
       6. Non-Disparagement. You agree not to disparage or denigrate SAVVIS or its directors or executive officers orally or in writing. SAVVIS agrees not to disparage or denigrate you or your agents, assignees, attorneys, family members, heirs, executors or administrators orally or in writing, and agrees to use its reasonable best efforts to cause its directors and executive officers not to disparage or denigrate you or your agents, assignees, attorneys, heirs, executors or administrators.
 
       7. Cooperation. You agree to cooperate with the Company and its attorneys as may be reasonably required concerning any past, present or future legal matters that relate to or arise out of your employment with the Company. The Company agrees to reimburse you for any and all reasonable costs and expenses (including but not limited to reasonable attorney's fees) you may incur in connection with such cooperation.
 
       8. Consultation with Attorney.  You hereby acknowledge that you have been advised to consult an attorney regarding this Agreement and its meaning and effect and that you understand the Agreement and the effect of signing the Agreement.  
       9. Choice of Law/Venue. This Agreement shall be governed by the laws of the State of Missouri (regardless of conflict of laws principles) as to all matters including without limitation validity, construction, effect, performance and remedies, except to the extent that such laws are preempted by federal law. Each party agrees that any proceeding relating to this Agreement shall be brought in the state courts of Missouri located in St. Louis County or the federal courts of the District of Missouri, Eastern Division.  Each party hereby consents to personal jurisdiction in any such action brought in any such Missouri court and waives any objection to venue in any such Missouri court or to any claim that any such Missouri court is an inconvenient forum.
       10. Transferability. This Agreement shall be binding upon any successor to the Company, whether by merger, consolidation, purchase of assets or otherwise. No provision of this Agreement is intended to confer any rights, benefits, remedies, obligations or liabilities hereunder upon any person or entity, other than the parties hereto and their respective successors and assigns, which in your case will include your heirs and/or your estate.
 
       11. Counterparts. This Agreement may be executed in counterparts.
 
       12. Entire Agreement. This Agreement and the Employment Agreement set forth the entire agreement and understanding relating to your employment relationship with and resignation from the Company; supersedes all prior discussions, negotiations, and agreements concerning your employment with the Company and separation therefrom; and may not be amended except by mutual written agreement. 
 
                                         SAVVIS, Inc.
                                        By:          /s/ Philip J. Koen        
                                                Philip J. Koen
                                                Chief Executive Officer

I have read this Letter Agreement and understand all of its terms.  I sign this Letter Agreement knowingly and voluntarily, with full knowledge of what it means.

  /s/ Jonathan C. Crane                          January 31, 2008        
Jonathan C. Crane                                Date

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