Connectivity is managed through Leica-specific office software, which acts as the interface for the driver's COM port:
(known for surveying equipment) does not manufacture a “TC 407” model. The closest match is the Leica TC407 (part of the older TC400 series of total stations). If that’s what you mean, then the “driver” typically refers to: LEICA TC 407 driver
A: No. The TC 407 was discontinued in ca. 2003. Leica’s myWorld support portal no longer lists it. Do not pay for fake "Leica TC 407 driver" downloads from third-party sites. LEICA TC 407 driver