Each of a feeding unit and a connector unit is provided with power supply ports and ground ports. In at least one of a connection of the power supply ports of the feeding unit and the power supply ports of the connector unit and a connection of the ground ports of the feeding unit and the ground ports of the connector unit, the number of parallel lines in at least a partial section is changed according to a length of the connection. In this way, a voltage drop between the feeding unit and the connector unit is adjusted.

Provided are an adapter, a terminal device and an adapter system. The adapter includes: a universal serial bus type-C (USB-C) plug cooperatively connected to a USB-C interface of the terminal device, a USB socket cooperatively connected to a charging plug, and a headset socket cooperatively connected to a headset plug, where a first communication pin of the USB-C plug is connected to a first communication pin of the USB socket, a second communication pin of the USB-C plug is connected to a second communication pin of the USB socket, a first sound channel pin and a second sound channel pin of the USB-C plug are connected to a right sound channel signal pin and a left sound channel signal pin of the headset socket in one-to-one correspondence.

A bus repeater includes first and second bus ports, a first termination resistor network coupled to the first bus port, a second termination resistor network coupled to the second bus port, and a power state change detection circuit coupled to the second bus port. The power state change detection circuit is configured to detect a power state change initiated by a device coupled to the first bus port. The detection of the power state change includes a determination that a voltage on the second bus port exceeds a threshold. Responsive to detection of the power state change, the power state change detection circuit is configured cause a change in a configuration of at least one of the first or second termination resistor networks.

Techniques for implementing improved USB redirection of USB HID class devices are provided. In one set of embodiments a client system can receive, from a virtual desktop running on a server system, a poll message directed to an HID interface of a USB HID class device plugged into the client system and identify a polling thread associated with the HID interface. The client system can further save a copy of the poll message in the polling thread and initiate local polling of the HID interface, where the local polling comprises providing, via the polling thread, the copy of the poll message to the HID interface.

Automatic-switching and deployment of software (SW)- or firmware (FW)-based USB4 connection managers (CMs) and associated methods, apparatus, software and firmware. A handshake is defined between BIOS and an operating system (OS) to discover supported CM capability and dynamically switch from a FW CM to a SW CM and visa verse if there is a mismatch. In addition, a mechanism is defined to deploy the correct FW or SW CM driver based on class code, 2-part or 4-part ID. Support for continued USB4 operation during an OS upgrade or downgrade is provided, while ensuring that the best possible CM solution is used based on the advertised platform and OS capability. USB4 controllers support a pass-through mode under which the host controller FW redirects control packets sent between an SW CM and a USB4 fabric, and a FW CM mode under which control packets are communicated between the host controller FW and the USB4 fabric to configure USB4 peripheral devices and/or USB4 hubs in the USB4 fabric.

A USB active optical cable and a plug capable of managing power consumption and state. The USB active optical cable and plug respectively comprises a first plug, a second plug, and an optical transmission medium used to connect the first plug and the second plug; the first plug and the second plug are configured to operate different operating states, including an initialization mode, a transmission mode, and a power saving mode, and they can switch between the different operating states. The USB active optical cable and plug are both based on the separate control of the transmitting unit and the receiving unit to distinguish different operating modes, provide necessary operating requirements and mode switching conditions for each mode, and also enable the checking and transmission of the plugging state in the power saving mode, thus facilitate the power consumption management of the active optical cable.

An electronic device configured to communicate with a host includes: a detecting logic configured to receive an initial command signal and a first completion signal according to the initial command signal after a connection of the host to the electronic device is established, and transmit a detection signal based on a signal transmission policy of the host that has been detected based on the initial command signal and the first completion signal; and a transmitting logic configured to transmit a second completion signal to the host based on the detection signal, wherein the signal transmission policy is different depending on whether the first completion signal is received in response to the second completion signal.

Provided is a multi-chip interconnection system based on Peripheral Component Interconnect Express (PCIE) buses. The system includes: N accelerators, M processors, and M PCIE buses, N and M being positive integers, and M being greater than N. Each accelerator includes at least two endpoints. Each processor includes one root complex. One endpoint and one root complex are connected by means of one PCIE bus, so that the at least two endpoints of each accelerator are connected to at least two processors by means of different PCIE buses.

A method for error handling of an interconnection protocol, a controller, and a storage device are provided. The method includes receiving a frame error position indication signal to indicate whether an error occurs in a frame in each clock cycle and a symbol position corresponding to the error, and receiving a frame correction position indication signal to indicate whether the frame in each clock cycle is correct and a symbol position corresponding to the frame that is correct; according to the frame error position indication signal and the frame correction position indication signal, determining that a frame error occurs in a first clock cycle, and after requesting for NAC frame transmission, sending a request for disabling the NAC frame transmission; and after the first clock cycle, comparing the frame error position indication signal and the frame correction position indication signal.

A receptacle includes a plurality of universal serial bus (USB) ports including a USB Type C PD port and a USB Type C port couplable to respective devices for charging, a controller coupled to the USB ports and including a dynamic power sharing logic, the controller structured to: determine whether one or more USB ports are coupled to the respective devices and manage first power negotiation and dynamic power sharing if both USB ports are coupled to respective devices or manage second power negotiation if only one USB port is coupled to respective device; an AC/DC converter including a gallium nitride (GaN) MOSFET on at least one of the primary side or the secondary side of the AC/DC converter, the AC/DC converter structured to provide high power to the USB Type C PD port; and a DC/DC converter structured to provide low power to the USB Type C port.