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ExpressCard

technology Maturity 11-13 Next article →

An ExpressCard is a specialized interface used to connect peripheral devices to a computer.

PCCard-ExpressCard ZP
PCCard-ExpressCard ZP

These devices, often called peripherals, allow a laptop to perform tasks it could not do on its own. The ExpressCard technical standard defines the design for both the slots built into computers and the expansion cards used in them. These cards contain electronic circuits that can include connectors for external hardware. By using these slots, users can expand a laptop's capabilities with tools like mobile broadband modems, Ethernet network ports, or sound cards.

Expresscard 34
Expresscard 34

This technology was designed to replace the older PC Card standards, also known as PCMCIA.

The mechanism of the ExpressCard relies on high-speed data pathways. It provides a direct connection to the computer's system bus through a PCI Express x1 lane. It also supports USB 2.0 connectivity.

Cardbus to ExpressCard Adapter
Cardbus to ExpressCard Adapter

This architecture offers much higher bandwidth than its predecessor, the CardBus. While CardBus devices usually shared a total bandwidth of 1.06 Gbit/s, an ExpressCard can reach a maximum throughput of 2.5 Gbit/s through PCI Express. It can also reach 480 Mbit/s through its dedicated USB 2.0 connection. Furthermore, the cards are hot-pluggable, meaning they can be inserted or removed while the computer is still running.

There are two distinct physical shapes, or form factors, for ExpressCards. The first is the ExpressCard/34, which is 34 mm wide.

Expresscard 34
Expresscard 34

The second is the ExpressCard/54, which is also 34 mm wide at the connector but has an L-shape to be wider in other areas. Most standard cards have a length of 75 mm. This length causes the card to protrude 5 mm above the surface of the laptop. However, some variants are only 70 mm long so they stay level with the surface. While the cards are generally thin, they may be thicker in certain sections to accommodate antennas or sockets.

Creative Labs Soundblaster X-Fi Xtreme Audio Notebook (11713516135)
Creative Labs Soundblaster X-Fi Xtreme Audio Notebook (11713516135)

The history of the ExpressCard began with the Personal Computer Memory Card International Association (PCMCIA). They showed the first ExpressCard products at the CeBIT trade show in Germany in March 2005.

Expresscard 34
Expresscard 34

Following the dissolution of the PCMCIA in 2009, the USB Implementers Forum (USB-IF) took over the responsibility for the standard. The USB-IF also manages the ExpressCard Compliance Program. This program allows companies to earn a license to use the official ExpressCard logo on their products. In March 2009, a new version called ExpressCard 2.0 was introduced at the CeBIT show in Hannover. This version added support for USB 3.0 SuperSpeed, which offers a raw transfer speed of 5 Gbit/s.

Many major computer manufacturers integrated ExpressCard slots into their high-end laptops during the mid-2000s. Hewlett-Packard began shipping systems with the interface in November 2004. Lenovo added the slot to its flagship ThinkPad T43 in May 2005.

Expresscard 34
Expresscard 34

Apple Inc. included ExpressCard/34 slots in every MacBook Pro from January 2006 until June 2009. Dell also used the technology in several product lines, including Precision, Inspiron, and Latitude. Other companies like Sony, ASUS, Acer, and Panasonic also utilized the standard. For example, Panasonic used ExpressCard/54 slots in its rugged Toughbook brand of laptops.

ExpressCards were used for a surprising variety of specialized hardware. Some cards provided wireless network interface controllers (NIC) or TV tuner cards. Others acted as solid-state drives or Serial ATA storage devices.

Sony even used the ExpressCard/34 form factor for flash memory modules in its XDCAM EX/SxS camcorders. This made it easier to copy video data between the cameras and laptops. In 2006, Belkin released the first ExpressCard docking station. This device used the PCIe part of the connection to enable 1600x1200 video resolution. It also used the USB part to provide audio and network ports.

While ExpressCard was a major step forward, it has since been replaced by newer technologies. Most modern laptops now use built-in components or standard USB 2.0 and 3.0 ports for peripherals. For high-performance needs, such as external desktop graphics card enclosures, Thunderbolt has become the preferred choice. Thunderbolt is significantly faster than ExpressCard. While ExpressCard could reach a maximum of 5 Gbit/s using one PCIe lane, the first two revisions of Thunderbolt offered 20 Gbit/s of bandwidth. Thunderbolt achieves this by using four PCIe 2.0 lanes. As a result, the ExpressCard has largely moved from being a common laptop feature to a specialized tool for specific business needs.

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🖼️ Images & Media (6)
File:PCCard-ExpressCard ZP.svg
PCCard-ExpressCard ZP.svg
File:Cardbus to ExpressCard Adapter.jpg
Cardbus to ExpressCard Adapter.jpg
File:Expresscard 34.jpg
Expresscard 34.jpg
File:Creative Labs Soundblaster X-Fi Xtreme Audio Notebook (11713516135).jpg
Creative Labs Soundblaster X-Fi Xtreme...
File:ExpressCard на 34 мм вставляется в ноутбук ф5.JPG
ExpressCard на 34 мм вставляется в ноутбук ф5.JPG
File:CreativeTools.se - PackshotCreator - ExpressCard (5987600166) (cropped).jpg
CreativeTools.se - PackshotCreator -...
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