Any risk using TB5 dock on older TB3 laptop?

I was able to get a great deal on the Lenovo TB5 Smart Dock 7500.

I want to try using it with my old Thinkpad P1 Gen 2 which has TB3.

Any risk plugging it into my machine? Will the 140W it puts out put my machine at any risk since my TB3 is limited to 100W? I don't think there is any risk since PD 3.1 will just negotiate what it will accept, but since I've never dealt with TB5, figured I'd ask :)

Thanks in advance!

**UPDATE** - no dice. The only feature that works is 100W USB-C power, and my external monitor. Ethernet, USB-A and USB-C ports on the dock don't work. Will keep the TB5 dock for my future TB5 lappy (hopefully a P1 Gen 8 if Lenovo will replace my defective one)