The ASUS ExpertBook B5 with Thunderbolt™ 4 port supports connection to external monitors and docks. The Thunderbolt™ 4 port is compatible with the USB4 interface and offers support for 4K display output and data transfer speeds of up to 40 Gbps.

It is likely that the device can be connected to a Lenovo ThinkPad dock via the Thunderbolt™ 4 port to drive two monitors, provided the dock also supports Thunderbolt™ 4 or USB4 and the corresponding display ports.

However, it is advisable to check the specifications of the Lenovo ThinkPad Dock to ensure that it provides the required compatibility and ports to connect to two monitors.