Netgear Sierra Wireless AirCard 503 3G/3.75G Express Card 21Mbps

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Quick Overview

  • ✓ The fastest Express card available, up to 21Mbps

  • ✓ 2-in-1 Data Card, Express Card & PC Card adapter

  • ✓ Worldwide usage on HSPA+ UMTS and GSM networks

  • ✓ Unlocked for worldwide providers

  • ✓ 3G UMTS - 850/900/1900/2100MHz

  • ✓ 2G GSM - 850/900/1800/1900 MHz

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Netgear Sierra Wireless AirCard 503 3G/3.75G Express Card 21Mbps

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The Sierra Wireless Aircard 503 Mobile Broadband is world’s first 2-in-1 PC Card and ExpressCard to support HSPA+ UMTS networks, also works on quad-band GSM. the AC503 data card connects seamlessly to 3G/WCDMA networks and unlocked to all providers around the world so you can stay connected whether traveling across town or halfway around the world. currently this is the fastest 3G express card on The 503 (also known as Telstra Elite Express Card) offers tri-band HSPA+/HSDPA/HSUPA (UMTS/WCDMA) 850/900/1900/2100 MHz and GPRS/EDGE/GSM 850/900/1800/1900 MHz frequency bands compatible.

HSPA+ is the next evolution of high-speed packet access (HSPA) wireless broadband technology with greater capacity for data throughput compared to current 3G networks. With peak data speeds of up to 21.6 Mbps on the downlink and 5.76 Mbps on the uplink, the AirCard 503 design delivers significant performance enhancements over previous broadband technologies.


Sierra Wireless is expanding the wireless world with a comprehensive offering of hardware, software, and connected services for mobile lifestyles and machine-to-machine communications. The customers count on us to help them succeed with innovative, reliable, high-performing solutions and early access to new wireless technologies. untill Dec 2011 have sold thousands of Sierra Wireless products.

Founded almost 20 years ago, Sierra Wireless has a track record of leading the way with new wireless technologies and solutions. they focus on wireless devices and applications, offering a comprehensive portfolio of products and services that reduce complexity for customers. With sales, engineering, and research and development teams located in offices around the world, they also offer a network of experts in mobile broadband and M2M integration to support customers worldwide.

Manufacturer Sierra Wireless
Model AC503
Unlocked Fully unlocked. ready to use with global internet providers
Network Bands
  • 3G HSPA+/HSUPA/HSDPA/UMTS/WCDMA - 850/900/1900/2100MHz.
  • 2G EDGE/GPR/GSM - 850/900/1800/1900MHz.
Data Speed Download up to 21 Mbps, Upload up to 5.76 Mbps.
3G/4G Speed 21Mbps

PC Card: 119 x 54 x 9.7mm.
ExpressCard only: 101 x 34 x 6.4mm.
Weight PC Card: 62g. 
Weight Express Card: 40g.

Supported Systems Windows 2000, Windows XP, Windows Vista, Windows 7, Mac OS X, Linux.
  • 2-in-1 PC Card and ExpressCard.
  • Integrated GPS for easy directions.
  • Proven reliability and performance from Sierra Wireless.
  • Form factor fits most laptops.
  • Send and receive information quickly and conveniently.
  • High-speed wireless connectivity in more places than Wi-Fi, offering greater mobility.
  • Easy installation to get up and running quickly.
Package Contents
  • Sierra Wireless AC503.
  • Quick Start Guide.
  • Box.
Warranty 6 Months Warranty
Product specifications are provided by the manufacturer and subject to change without prior notice.

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  1. Great stuff Review by Jeff

    This Express Card is so great I went with it to europe and it was so helpfull. (Posted on 6/24/12)

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