The 172622-001 Compaq ISA PCI IDE Backplane is a modular expansion component designed for use in server and workstation platforms. It provides a dedicated backplane interface that accommodates both ISA and PCI expansion slots while delivering IDE connectivity for internal storage devices. This backplane offers a reliable solution for integrating IDE drives into systems that require compatibility with legacy ISA architecture as well as modern PCI-based expansion. The design incorporates standard Compaq engineering practices, ensuring robust electrical performance and straightforward installation within supported chassis configurations.