ThinkPad Essential Port Replicator
with the conductive rubber caps
- 42W4627 (42W4626), 42W4623 (42W4622), 42W4601 (42W4600)
without the conductive rubber caps
- 41W6567 (41W6566), 41W6565 (41W6564), 26R9065 (26R9064)
This docking station is capable of accepting an 'extender' (FRU: 42W3365/42X4884) that seems to be meant for supported 14.1-inch widescreen models. The purpose of this extender is to function as a wrist-rest/palm-rest, as the 14.1-inch widescreen models do not have sufficient coverage to act as a wrist-rest/palm-rest.