ThinkPad X6 UltraBase

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ThinkPad X6 UltraBase (40Y8116)

This is a proprietary docking station for models with a CS05 slim docking port.



  • 4x USB 2.0 (Type-A) port
  • 1x Modem (RJ-11) port
  • 1x Ethernet (RJ-45) port
  • 1x VGA-out (DE-15) port
  • 1x Parallel (DB-25, ECP/EPP/SPP) port
  • 1x Serial (DE-9, RS-232) port
  • 1x Headphone port (3.5mm, TRS)
  • 1x Microphone port (3.5mm, TS)
  • 1x Ultrabay Slim slot
  • 1x DC-in (barrel) socket
  • 2x Audio speaker (stereo)


  • 1x Proprietary key lock (secures the laptop to the dock)
  • 1x Kensington security lock slot



Part numbers

  • 42X4320 (42X4321), 42W4634 (42W4635), 42W3108 (42W3107), 42W3015 (42W3014), 40Y8120 (40Y8117)

Models supporting this accessory