? Hub allows ProClip ET4X Cradles to split the single USB-A port into 3 USB-A ports and add a 10/100/1000 Ethernet interface. ? Hub splits the power provided by the host to power a keyboard, corded barcode scanner, and or any other attached device. ? Hub easily attaches to rear of ProClip cradles listed below. ? USB-A cable on Hub connects to USB-A port on ProClip cradles. ? Recommended for use with the following ProClip Charge + Communication cradles that do not support Expansion Back accessories: - 3PTY-PCLIP-216377 - 3PTY-PCLIP-216383 - 3PTY-PCLIP-216379 - 3PTY-PCLIP-216385 For Expansion Back cradles use ProClip #216258, available on ProClip website.