Abstract: An apparatus is envisioned that manages I/O access for host subsystems that share I/O peripherals. Host subsystem ports receive I/O requests from and communicate with the plurality of platforms. A translation circuit, coupled to the host subsystem ports, identifies an I/O request from the host subsystem port as being associated with a particular host subsystem. A plurality of output ports are provided and are coupled to the peripheral I/O devices. A switching element is coupled to the translation circuit and to the output ports, and routes I/O requests to a particular output port. An operations circuit, coupled to the switching element, performs translation and redirection functions on the I/O requests. A management circuit interfaces with the host subsystems. The management circuit manages the use of the output ports and brokers the physical usage of the ports. The apparatus is contained on physical devices distinct from the plurality of platforms.