Thinkpad onelink pro dock (4x10e52935)
onelink delivers data, driver-free dual video, and power through a single convenient connector
unlike usb docks the onelink pro dock delivers video with no compression, no drivers and no impact on image quality and notebook performance
power button on dock mirrors system power button
2x usb 3.0 (one with always-on mobile device charging) - ideal for use with memory keys, hard drives and other quick access devices.
Stereo / mic combo audio port
2x usb 2.0 - ideal for most usb devices, including printers, keyboards, and mice.
2x usb 3.0 – great for backup hard drives and other high speed usb accessories
compatible with lenovo b50-70, b50-80, e431, e440, e450, e455, e460, e465, e531, e540, e550, e550c ,e555, e560, e565, s1 yoga, s431, s440, s531, s540 thinkpad yoga (s series), thinkpad s1, yoga 12, thinkpad s3, yoga 14, thinkpad s5 ,yoga 15 , x1 carbon (2nd gen) ,x1 carbon (3rd gen)