ThinkPad Mini-Dock Series 3

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ThinkPad Mini-Dock Series 3, Type 4337 (433710U/433715U)

This is a proprietary docking station for models with a CS09 standard docking port.


  • 6x USB 2.0 (Type-A) port1
  • 1x gigabit Ethernet (RJ-45) port
  • 1x DisplayPort 1.2 out port
  • 1x DVI-D (single-link) out port
  • 1x VGA-out (DE-15) port
  • 1x Headphone port (3.5mm, TRS)2
  • 1x Microphone port (3.5mm, TS)2
  • 1x Proprietary key lock (secures the laptop to the dock)
  • 1x Kensington security lock slot
  • 1x DC-in (barrel) socket


  1. For USB 3.0 variants of this dock, a single USB 3.0 Type-A port is available. However, 1 USB 2.0 Type-A port is removed as a result of this addition.
  2. These ports cannot be used if an L412 or an L512 is used to operate the dock.
  3. The USB 3.0 variant of this dock does not support USB 3.0 operation on any Arrandale or Sandy Bridge model, with the exception of the X220 due to design limitations.
Thinkpad mini dock series 3.jpg

Part numbers

with USB 3.0 (4337-15U)

  • 04Y2072 (SD20A23326),

without USB 3.0 (4337-10U)

  • 04W1816 (0B00031), 75Y5735 (75Y5734), 75Y5733 (75Y5732)

Models supporting this accessory