This is the initial public offering of our ordinary shares. We are selling all of the ordinary shares being sold in this offering. Prior to this offering, there has been no public market for our ordinary shares. The initial public offering price of our ordinary shares is expected to be between $12.00 and $14.00 per share. Our ordinary shares have been approved for quotation on The Nasdaq Global Market under the symbol “MLNX,” subject to official notice of issuance.

We have granted the underwriters an option to purchase up to 900,000 additional ordinary shares from us to cover the over-allotment of shares.

The underwriters expect to deliver the ordinary shares on or about          , 2007.

Neither the Securities and Exchange Commission nor any state securities commission nor any other regulatory body has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

You should rely only on the information contained in this prospectus or contained in any free writing prospectus filed with the Securities and Exchange Commission. Neither we, nor the underwriters, have authorized anyone to provide you with additional information or information different from that contained in this prospectus or in any free writing prospectus filed with the Securities and Exchange Commission. We are offering to sell, and seeking offers to buy, our ordinary shares only in jurisdictions where offers and sales are permitted. The information contained in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or of any sale of our ordinary shares.

Unless the context requires otherwise, the words “Mellanox,” “we,” “company,” “us” and “our” refer to Mellanox Technologies, Ltd. and our wholly-owned subsidiary, Mellanox Technologies, Inc. For purposes of this prospectus, the term “shareholders” shall refer to the holders of our ordinary shares.

Investing in our ordinary shares involves a high degree of risk. You should carefully consider the following risk factors, in addition to the other information set forth in this prospectus, before purchasing our ordinary shares. Each of these risk factors could harm our business, financial condition or operating results, as well as decrease the value of an investment in our ordinary shares.

We have only recently become profitable, and we first recorded a profit in the year ended December 31, 2005. We incurred net losses prior to the quarter ended June 30, 2005 and incurred a net loss during the quarter ended March 31, 2006. As of September 30, 2006, we had an accumulated deficit of approximately $73.1 million. In addition, we recorded net losses of $15.6 million and $8.9 million for the years ended December 31, 2003 and 2004, respectively. We may not be able to sustain or increase profitability on a quarterly or an annual basis. This may, in turn, cause the price of our ordinary shares to decline. To sustain or increase our profitability, we will need to generate and sustain substantially higher revenues while maintaining reasonable cost and expense levels. We expect to increase expense levels in each of the next several quarters to support increased research and development, sales and marketing and general and administrative efforts. These expenditures may not result in increased revenues or customer growth, and we may not remain profitable.

Our revenues have grown rapidly over the last four years, approximately doubling in size from each of 2003 to 2004 and 2005, and increasing by 15% in 2006. Our revenues increased from $10.2 million to $20.3 million, $42.1 million and $48.5 million for the years ended December 31, 2003, 2004, 2005 and 2006, respectively. We do not expect to sustain our recent growth rate in future periods. You should not rely on the revenue growth of any prior quarterly or annual periods as an indication of our future performance. If we are unable to maintain adequate revenue growth, we may not have adequate resources to execute our business objectives and our share price may decline.

While the usage of InfiniBand has increased since its first specifications were completed in October 2000, continued adoption of InfiniBand is dependent on continued collaboration and cooperation among information technology, or IT, vendors. In addition, the end users that purchase IT products and services from vendors must find InfiniBand to be a compelling solution to their IT system requirements. We cannot control third-party participation in the development of InfiniBand as an industry standard technology. We rely on server, storage, communications infrastructure equipment and embedded systems vendors to incorporate and deploy InfiniBand integrated circuits, or ICs, in their systems. InfiniBand may fail to effectively compete with other technologies, which may be adopted by vendors and their customers in place of InfiniBand. The adoption of InfiniBand is also impacted by the general replacement cycle of IT equipment by end users, which is dependent on factors unrelated to InfiniBand. These factors may reduce the rate at which InfiniBand is incorporated by our current server vendor customers and impede its adoption in the storage, communications infrastructure and embedded systems markets, which in turn would harm our ability to sell our InfiniBand products.

Our sales are made on the basis of purchase orders rather than long-term purchase commitments. In addition, our customers may defer purchase orders. We place orders with the manufacturers of our products according to our estimates of customer demand. This process requires us to make multiple demand forecast assumptions with respect to both our customers’ and end users’ demands. It is more difficult for us to accurately forecast end-user demand

A small number of customers accounts for a significant portion of our revenues. In the year ended December 31, 2005, sales to Cisco Systems and Topspin Communications (which was acquired by Cisco Systems in May 2005) accounted for 44% of our total revenues, and sales to Voltaire accounted for 12% of our total revenues. In the year ended December 31, 2004, sales to Cisco Systems accounted for 34% of our total revenues, and sales to Voltaire accounted for 18% of our total revenues. Because the majority of servers, storage, communications infrastructure equipment and embedded systems is sold by a relatively small number of vendors, we expect that we will continue to depend on a small number of customers to account for a significant percentage of our revenues for the foreseeable future. Our customers, including our most significant customers, are not obligated by long-term contracts to purchase our products and may cancel orders with limited potential penalties. If any of our large customers reduces or cancels its purchases from us for any reason, it could have an adverse effect on our revenues and results of operations. For example, one of our largest customers — Cisco Systems — has ordered fewer products from us in the nine months ended September 30, 2006 as compared to its order history for the nine months ended September 30, 2005, which resulted in a decrease to revenues from that customer by $9.8 million. A portion of this percentage decline was attributable to an accumulation of inventory in 2005 by Cisco following its acquisition of Topspin Communications, which we believe has been substantially sold in 2005 and 2006. In addition, our sales are dependent on our customers’ sales, and the loss of end-user customers by any of our OEM customers could have an adverse effect on our revenues and results of operations.

The markets in which we operate are extremely competitive and are characterized by rapid technological change, continuously evolving customer requirements and declining average selling prices. We may not be able to compete successfully against current or potential competitors. With respect to InfiniBand products, we compete with QLogic Corporation, which recently acquired SilverStorm Technologies. We also compete with providers of alternative technologies, including Ethernet, Fibre Channel and proprietary interconnects. The companies that provide IC products for these alternative technologies include Marvell Technology Group, Broadcom Corporation, Emulex Corporation, QLogic Corporation and Myricom. Many of our current and potential competitors have longer operating histories, significantly greater resources, greater economies of scale, stronger name recognition and larger customer bases than we have. This may allow them to respond more quickly than we are able to respond to new or emerging technologies or changes in customer requirements. In addition, these competitors may have greater credibility with our existing and potential customers. If we do not compete successfully, our market share, revenues and profit margin may decline, and, as a result, our business may be adversely affected.

We must develop new products or enhance our existing products with improved technologies to meet rapidly evolving customer requirements. We are currently engaged in the development process for next generation products, and we need to successfully design our next generation and other products successfully for customers who continually require higher performance and functionality at lower costs. The development

There is a risk that these developments or enhancements, such as migrating our next generation products from 130nm to 90nm silicon process technology, will be late, fail to meet customer or market specifications and will not be competitive with other products using alternative technologies that offer comparable performance and functionality. We may be unable to successfully develop additional next generation products, new products or product enhancements. Our next generation products that include Ethernet support or any new products or product enhancements may not be accepted in new or existing markets. Our business will suffer if we fail to continue to develop and introduce new products or product enhancements in a timely manner or on a cost-effective basis.

While we design and market our products and conduct test development in-house, we do not manufacture, assemble, package and production test our products, and we must rely on third-party subcontractors to perform these services. We currently rely on Taiwan Semiconductor Manufacturing Company, or TSMC, to produce our silicon wafers, and Flextronics International Ltd. to manufacture and production test our adapter cards. We also rely on Advanced Semiconductor Engineering, or ASE, to assemble, package and production test our ICs. We are currently arranging an additional manufacturing line with one of our subcontractors, but we may not be able to finalize this arrangement. If these subcontractors do not provide us with high-quality products, services and production and production test capacity in a timely manner, or if one or more of these subcontractors terminates its relationship with us, we may be unable to obtain satisfactory replacements to fulfill customer orders on a timely basis, our relationships with our customers could suffer, our sales could decrease and our growth could be limited. In particular, there are significant challenges associated with moving our IC production from our existing manufacturer to another manufacturer with whom we do not have a pre-existing relationship.

We currently do not have long-term