SILEX SYSTEMS LIMITED — Capital/Financing Update 2007

Oct 29, 2007

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MARKET RELEASE

30 October 2007

Silex Systems Limited

TRADING HALT

The securities of Silex Systems Limited (the “Company”) will be placed in pre-open at the request of the Company, pending the release of an announcement by the Company. Unless ASX decides otherwise, the securities will remain in pre-open until the earlier of the commencement of normal trading on Thursday, 1 November 2007 or when the announcement is released to the market.

Security Code:

SLX

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Joseph Anderson Adviser, Issuers (Sydney)

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30 October 2007

BY EMAIL: stephanie.yong@asx.com.au joseph.anderson@asx.com.au

Ms Stephanie Yong/Mr Joseph Anderson Australian Stock Exchange Limited Level 6 20 Bridge Street SYDNEY NSW 2000

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Dear Stephanie and Joseph

REQUEST FOR TRADING HALT

Silex Systems Limited (ACN 003 372 067) (ASX Code: SLX) ( Silex ) requests a trading halt under Listing Rule 17.1, commencing prior to 10.00am on Tuesday 30 October 2007 (today).

Silex is seeking a trading halt pending the announcement of a private placement of new fully paid ordinary shares to eligible 'professional' and 'sophisticated' investors (within the meaning of the Corporations Act 2001 (Cth)) and eligible international investors. Details of the placement are to be determined via the conduct of a variable price bookbuild ( Bookbuild ), and the placement will not be underwritten. A trading halt is required to assist Silex to manage its continuous disclosure obligations under Listing Rule 3.1 in light of the conduct of the Bookbuild, to enable the Bookbuild to be conducted in an orderly manner and to ensure that the conduct of the Bookbuild does not create an uncertain or uninformed market for trading in Silex shares (particularly given recent market volatility).

Silex would like the trading halt to last until the earlier of an announcement being made to ASX regarding the outcome of the Bookbuild or until the opening of trade at 10.00am on Thursday, 1 November 2007 (but in any event not beyond the time prescribed in the ASX Market Rules).

Silex is not aware of any reason why the trading halt should not be granted by ASX.

Yours sincerely

SILEX SYSTEMS LIMITED

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Dr Michael Goldsworthy CEO and Managing Director