Story of my past couple months. There are five different products named "g4 dock", four of which are newer than the G5 dock.
The OLD g4 dock, and then 120W/280W Thunderbolt variants that are either TAA approved or not. One of these four has a 2.5GB Intel NIC. Good luck figuring out which one because they merged the specsheet for all four of them.
Because they love to change the URLs of their website every year.
One of the universal truths is that a drunk sailor with a fistful of money could simply not buy anything on the HP site before he sobered up. That site is the hallmark of super-bad site design, and always has been.