If Mini PCI is smaller than Low-Profile PCI, then why not use Mini PCI rather than define a new standard?
The smaller card dimensions for Mini PCI require more compact and higher density components than Low-Profile PCI. Mini PCI is a standard for integrated peripherals that targets small form-factor products such as notebook PCs, docking stations and printers. In addition to the small size, Mini PCI requires a new interface to the board and system. Low-Profile PCI leverages existing adapter-card designs. Many cards are already short in height to save cost and optimize PCB panel sizes. In many cases, the bracket drives the height of the card assembly and therefore, the height of the system design.
