ThinkPad X6 Tablet UltraBase

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ThinkPad X6 Tablet UltraBase (41U3120)

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


X6 Tablet UltraBase.gif

Part numbers

  • 42X4322 (42X4323), 41W6721 (41W6720)

Models supporting this accessory