Contec MB-PCI4/9(PC) is a high-quality computer expansion backplane that provides users with a range of possibilities to upgrade and customize their systems. The device supports both PCI and ISA bus slots, allowing for the integration of various add-on cards and peripherals. It features four 32-bit PCI bus slots and nine ISA bus slots, enabling users to connect a variety of devices such as graphics cards, sound cards, network adapters, and more. Additionally, the backplane includes two PICMG standard CPU board slots, providing flexibility for system configurations.