Tech Info,
Windows 95, 98, ME, XP,
NT4, 2000, Errors,
Search products ,
Search FAQs.


CardBus | Tech Info Home Page | PCMCIA |

General Information

CardBus is a 32-bit bus mastering architecture for PC Cards. It was standardized in May 1996 by the standards association "PCMCIA". It is similar to the PCI bus.

For more information see the "PCMCIA Information" page.

It is an advanced version of the older 16-bit 'PC Card' technology.

It uses a 3.3 V, 32-bit data bus running at 33Mhz.and provides for Bus-mastering,

CardBus Fast Ethernet PC Cards such as the 3Com products run at almost 90 Mbps unlike the 16-bit Fast Ethernet PC Cards which operate at only about 20-30 Mbps.

CardBus cards should be backward compatible to 16-bit PC Cards. Older style PC Cards should also work in CardBus slots

Connections such as the 3com XJACK are used to connect the card to devices.

Physical Characteristics

PCMCIA, PC-Card, CardBus,

PC Card Physical Characteristics

There are 3 types of PCMCIA cards and "extended" cards. They are identical in size

Type I
( 3.3 mm thick )
Type II
( 5.0mm thick )
Type III
( 10.5mm thick )

for Memory (SRAM,Flash,etc)

Modem, LAN, etc

This card comes in two versions, the 32-bit, 3.3V PC CardBus card and the16-bit, 5.0V PC card.

hard drives

They all have the same size, and only differ in thickness, a thinner card can be used in a thicker slot, but a thicker card can not be used in a thinner slot
Extended Cards are just longer then standard cards.

The connector pin-out is found at the site.

Links -


You are at the site which is not associated with the company or products shown on this page.
Contact Us,

1997,98,99,2000 All rights reserved