mini-PCI bus
The development of a scaled-down PCI bus, the mini-PCI, was initiated in 1998 by several companies in order to integrate the capabilities of PCI into portable computers, in laptops and notebooks.
To this end, an industry standard was specified with new mini-PCI cards that are about the size of a check card. These cards are built into the portable and cannot be plugged in from the outside, like the PC card. The Mini PCI specifications define three types of cards, which differ in card size, I/O connections, and connectors.
Type I uses TP cables to connect the RJ11 or RJ45 j acks of the portable to the Mini-PCI card, whereas the Type II Mini-PCI card has built-in RJ11 and RJ45 jacks and thus must be placed on the motherboard so that the jacks are accessible from the outside.
The connection to the motherboard is made via a 100- pin connector. Type III uses a 124-pin connector to the motherboard, which has a maximum height of 3 mm. The additional 24 pins are needed for the signal feedback of the I/O connection.