ThinkPad Ultra Dock

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ThinkPad Ultra Dock 90W/135W/170W, Type 40A2 (40A20090XX/40A20135XX/40A20170WW)

This is a proprietary docking station for models with a CS13 standard docking port. There are no known differences concerning the 90 W, 135 W, and the 170 W variant, with the exception of the AC adapters provided.



  • 3x USB 3.0 (Type-A) port
  • 1x USB 2.0 (Type-A) 'always-on' charging port
  • 2x USB 2.0 (Type-A) port
  • 1x Ethernet (RJ-45) port
  • 2x DisplayPort 1.2 out port1
  • 1x HDMI 1.4 out port2
  • 1x DVI-D (dual-link) out port
  • 1x VGA-out (DE-15) port
  • 1x Headphone/Microphone combo (3.5mm, TRRS, CTIA) port
  • 1x DC-in (slim-tip) socket


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


  1. The DisplayPort MST hub found in this dock may not be supported properly by older Linux kernels, which might affect multi-display support.
  2. If two of the DisplayPorts are being used, this HDMI port will be inactive due to bandwidth limitations.
  3. This model requires the ThinkPad CS13 Dock Adapter.

Part numbers

  • 00HM917 (SD20F82750), 04W3947 (SD20A06037)

Models supporting this accessory