Port replicator external interfaces lan rj45 usb 20 usb 30 video output vga usb 20 ports 3 usb 30 ports 1 compatible with lenovo thinkpad t400s lenovo thinkpad w510 lenovo thinkpad t410 lenovo thinkpad t410s lenovo thinkpad t420s lenovo thinkpad t420 lenovo thinkpad x220