Question about Bosch eBike Ampere BPC3400

Good morning, if from a technical point of view, the BPC3400 and the BPC3403 seem identical, I do not understand the distinction in the manual where it says that with the 3403 you can only load bicycles up to 45 km/h. Is this a translation problem? In the sense that the BBC 3403 can load bicycles up to 45 km/h, while the BPC3400 cannot, but the BPC3403 is also good for normal bicycles up to 25? The label now says BPC340, so at the time of purchase it is impossible to know which of the two will be in the box.