[ Connection] Equipped with two stable ps/2 interfaces for secure keyboard and mouse connectivity. ^^ [ Ps/2 Ports] Features 2 external ps/2 ports for keyboard and mouse, supporting hot swap for convenient. ^^ [High-performance Chip] Adopting original for mcs9990cv chip, ensuring stable and strong compatibility. ^^ [Usb 2.0 Connection] Built-in usb 2.0 pin for easy connection to external devices, with 2 additional usb 2.0 ports. ^^ [Enhanced Power Supply] Closed inductor electromagnetic interference, with three full solid capacitors for increased temperature.