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Press Release

Atheros XSPAN PC Solutions Are First to Achieve Cisco Compatible Extensions Version 5 Certification

World’s Most Widely Adopted 802.11n Wi-Fi Technology Supports Cisco’s Enterprise Security and Management Features

SANTA CLARA, Calif., August 11, 2008 — Atheros Communications, Inc. (NASDAQ: ATHR), a leading developer of advanced semiconductor system solutions for wireless and wired communications, today announced that its XSPAN® AR9280 and AR9281, the industry’s first shipping, single-chip 802.11n solutions for the PC market, are also the first wireless LAN (WLAN) chipsets to be certified for the new Cisco Compatible Extensions Program Version 5 (CCX V5). XSPAN is the industry’s most widely adopted 802.11n technology, and is contained in a breadth of products worldwide, including PCs for the enterprise and consumer markets, retail, enterprise and carrier networking equipment, and consumer electronics devices.

Several PC OEMs are currently launching notebook platforms that feature Atheros’ popular dual-band AR9280 or single-band AR9281 PCI Express (PCIe) designs to bring industry-leading 802.11n performance, and power and cost efficiencies to their customers. With this latest Cisco Compatibility Extensions certification, PC OEMs using Atheros’ XSPAN can assure enterprise customers of platform interoperability with Cisco’s latest wireless infrastructure.

Cisco’s Compatible Extensions Program Version 5 enables state-of-the-art enterprise-class security, management and troubleshooting capabilities for a wide array of mobile devices. This newest version of Cisco Compatible Extensions not only protects data frames – as addressed by the 802.11i standard – but also secures management frames with a layer of authentication and encryption to prevent network Denial of Service attacks through the WLAN. The Management Frame Protection provides additional enhancements to wireless security, and instantly detects and reports attacks to Cisco’s Wireless Control System (WCS) to facilitate timely and accurate network management. The specification also significantly expands troubleshooting capabilities by providing automated diagnostic tests and reporting to the network management system for performance evaluation, application guarantees and problem solving.

 “Cisco Compatible Extensions Version 5 helps ensure optimum performance and interoperability with Cisco’s Unified Wireless Network and Mobility Services,” said Christophe Servais, Cisco’s marketing manager of mobility solutions. “Atheros provides a combination of industry-leading 802.11n performance with state-of-the-art Compatible Extensions interoperability to PC customers who wish to enhance the quality of wireless computing, voice, location and other enterprise applications and services.”

Atheros XSPAN PCIe solutions deliver high bandwidth 802.11n performance for enterprise notebooks of up to 300 Mbps physical data rates per band. The Atheros solutions certified as Cisco Compatible Extensions support important industry standards including WMM® (Wi-Fi Multimedia™), and Wi-Fi Protected Set-Up™ via Atheros’ JumpStart for Wireless™, the company’s industry standardized simple network configuration software.

“All of Atheros’ client solutions are capable of supporting Cisco Compatible Extensions to enable a better wireless user and IT management experience,” said Todd Antes, vice president of wireless networking and computing for Atheros. “Today, enterprise network administrators are faced with the challenge of intelligently managing an increasing number and variety of devices connected to the wireless LAN ─ from notebook PCs to MIDs to handsets. Cisco Compatible Extensions Version 5 provides the latest tools to help simplify wireless LAN management and provide enterprise-class, bullet-proof security.”

For more information about Cisco’s Compatible Extensions Program, please visit http://www.cisco.com/web/partners/pr46/pr147/partners_pgm_concept_home.html

About Atheros Communications, Inc.

Atheros Communications is a leading developer of semiconductor system solutions for wireless and wired communications products. Atheros combines its wireless and networking systems expertise with high-performance radio frequency (RF), mixed signal and digital semiconductor design skills to provide highly integrated chipsets that are manufactured on low-cost, standard complementary metal-oxide semiconductor (CMOS) processes. Atheros technology is used by a broad base of leading customers, including personal computer, networking equipment and consumer device manufacturers. For more information, please visit http://www.atheros.com or send email to info@atheros.com.

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Atheros, the Atheros logo, XSPAN and JumpStart for Wireless are trademarks of Atheros Communications, Inc. All other trademarks mentioned in this document are the sole property of their respective owners.

Note on Forward Looking Statements

Except for the historical information contained herein, the matters set forth in this press release, including the features, benefits and performance of Atheros’ and Cisco’s products, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially, including, but not limited to, difficulties in the development of new and enhanced products, general economic conditions, the effects of competition and technological change, and the risks detailed in Atheros' Annual Report on Form 10-K for the year ended December 31, 2007 and its Quarterly Reports on Form 10-Q for the quarters ended March 31, 2008 and June 30, 2008, as filed with the Securities and Exchange Commission, and in other reports filed with the SEC by Atheros from time to time. These forward-looking statements speak only as of the date hereof. Atheros disclaims any obligation to update these forward-looking statements.


For press inquires contact:: Dakota Lee,  408-720-5597, dakota@atheros.com, or Dan Muñoz, A&R Edelman for Atheros, 650-762-2918, dmunoz@ar-edelman.com

For analyst inquires contact: Deborah Stapleton of Stapleton Communications, Inc.,
+1-650-470-0200,
deb@stapleton.com