Example implementations relate to transmitting signals via USB ports. For example, a system according to the present disclosure, may include a host module including a plurality of USB ports, a first expansion module, and a second expansion module. The first expansion module may include a first USB port and a second USB port. The first expansion module may receive a signal from the host module at a first USB port, and direct the signal to a second USB port. The first expansion module may transmit the signal to a second expansion module via a second USB port.

In an example in accordance with the present disclosure, a system is described that includes a hub for routing data traffic between a first computing device and a second computing device. A detection device of the system detects a communication protocol between the computing devices. A switch of the system routes traffic directly between the computing devices when a first communication protocol is detected. When a second communication protocol is detected, the switch re-routes traffic of the first type from the first computing device back to the hub to convert the traffic of the first type to a second type and routes converted traffic directly to the second computing device.

Provided are systems and methods for hot-plugging emulated peripheral devices (e.g., endpoints) into host devices that either have a hypervisor that does not support virtualized peripheral device or that do not include a hypervisor. In various implementations, a configurable peripheral device can emulate a switch that includes upstream ports and downstream ports. When a new endpoint device is requested, the configurable peripheral device can, using an emulation configuration for the new endpoint device, generate an emulation for the new endpoint device. The configurable peripheral device can connect the endpoint device to a downstream port, and then trigger a hot-plug mechanism, through which the host device can add the new endpoint device to the known hardware of the host device.

Disclosed embodiments include a network switch having a first number of switch elements and a second number of switch elements cross-connected to the first switch elements to passively route network traffic through the network switch in accordance with a predefined configuration.

An interconnect for providing data access between nodes of an integrated circuit, comprises a predetermined type of ingress port comprising routing circuitry responsive to a read-triggering request received from a requesting node to select from a selected egress port via which signals are to be routed to a destination node to control the destination node to return at least one read response dependent on data read from a target storage location. In response to the read-triggering request, the routing circuitry obtains a relative data width indication specifying whether read responses received at the selected egress port have a narrower data width than read responses to be provided to the requesting node by the predetermined type of ingress port, and controls allocation of resource for handling the read-triggering request or the at least one read response depending on the relative data width indication.

Disclosed herein are techniques for maintaining a secure execution environment on a server. In one embodiment, the server includes a bus manager circuit. The bus manager circuit comprises a first bus interface configured to be coupled with a first hardware device of the server, and a second bus interface configured to be coupled with a second hardware device of the sever. The bus manager further includes a control module. Under a first mode of operation, the control module is configured to receive an access request from the first hardware device to access the second hardware device, and responsive to determining not to grant the access request based on a pre-determined access policy, and block at least some of data bits corresponding to the access request from the second bus interface. The control module may also process the access request in a different manner under other modes of operations.

A synchronous transmission device includes a first communication port, a first bus instance and a second bus instance. The first communication port is connected to the first endpoint and the second endpoint. The first bus instance executes a first data transmission with the first endpoint according to a first node of a first schedule list. The first node corresponds to the first endpoint, and the first bus instance corresponds to the first communication port. When the first data transmission is executed, the first bus instance is further configured to determine whether the second bus instance is idle. When the second bus instance is idle, the first bus instance controls the second bus instance to execute a second data transmission with the second endpoint according to a second node of the first schedule list. The second node of the first schedule list corresponds to the second endpoint.

Virtual machines in a computer system cluster, or cloud environment, require access to their assigned storage resources connected to the virtual machines via storage area networks (SAN). Such virtual machines may be independent from associated physical servers in the computer system cluster on which they are deployed. These virtual machines may dynamically migrate among assigned physical servers while maintaining access to their connected storage resources both from the source physical server and the target physical server during the migration.

A universal serial bus (USB) hub supporting multiple hosts and an automobile head unit using the same are provided. A USB hub circuit is set in the USB hub, which is coupled to external connectors through a bus matrix. Herein, an upstream port connector of the USB hub is coupled to the automobile head unit. When one device is coupled to a downstream port requests to serve as a host, the bus matrix couples the downstream port, coupled to the requesting device, to an upstream port of the USB hub circuit, and couples the downstream port to the automobile head unit to make the automobile head unit serve as the device.

An interconnect for providing data access between nodes of an integrated circuit, comprises a predetermined type of ingress port comprising routing circuitry responsive to a read-triggering request received from a requesting node to select from a selected egress port via which signals are to be routed to a destination node to control the destination node to return at least one read response dependent on data read from a target storage location. In response to the read-triggering request, the routing circuitry obtains a relative data width indication specifying whether read responses received at the selected egress port have a narrower data width than read responses to be provided to the requesting node by the predetermined type of ingress port, and controls allocation of resource for handling the read-triggering request or the at least one read response depending on the relative data width indication.