Questions about Lenovo ThinkVision P40w-20

To operate the Lenovo ThinkVision P40w-20 with a MacBook Pro via USB-C, you can use a Thunderbolt 4 cable. This cable connects the MacBook Pro to the monitor and enables the transmission of image signals and power delivery. Make sure you use a certified 40G Thunderbolt 4 cable to utilise the full power of the monitor. If you need additional connections, you can use the monitor's Thunderbolt downstream port to connect additional devices or even operate another monitor in a daisy chain configuration.

Yes, that's not a problem at all, it's supported by Thunderbolt 3.

For example, we can offer you this model: ASUS GeForce GT 1030 2G BRK (2 GB) with a resolution of 7680x4320 at 60hz.

The specifications are correct, but the 250W is the maximum power consumption, as stated by Lenovo itself: 60 W type, 250 W max.

In both cases it should be the article "62C1GAT6EU":https://psref.lenovo.com/Detail/ThinkVision/ThinkVision_P40w_20?M=62C1GAT6EU. The difference seems to be only due to the source of supply/supplier and packaging/barcode. Depending on the purchasing conditions, there may also be differences in the sales price.

No, the KVM functionality does not require to install any software.