Two host inputs
IN1 and IN2 connect two host computers to the shared hub.
USB Switching & Expansion
Dual-Host 4-Port USB 2.0 Switch Hub
A four-port USB 2.0 hub that lets two host computers share the same connected USB devices through a pushbutton host selector.
Four downstream ports
Four USB-A OUT connectors support shared USB peripherals.
Pushbutton switching
The onboard switch selects which host controls the connected devices.
USB 2.0 hub controller
A GL850G-based hub section expands the selected upstream connection to four ports.
External power input
The DCIN connector supplies the hub and attached peripherals independently from the host.
Power conversion
An NB679 synchronous buck stage provides a high-current 5V rail from the DC input.
Signal switching
A high-speed USB multiplexer routes the selected host data pair to the hub controller.
Protection and production files
Per-port ESD protection, BOM, OrCAD, Allegro PCB and Gerber files are included.
USB Switching & Expansion
Front and rear views of the assembled USB switch hub
