[NAME]  Happy to help! If you only want the module, then you’ll keep the headset back you have, because you’ll only be swapping the portion to the left of the seam at the top of the dock. This appears to be what you’re looking for.
As per the title, I'm a bit confused about all the documentation around bandwidth etc... Just got 2x Dell U2720Q for my work from home setup aiming for a 3x UHD setup (monitors + native laptop display) and discovered this setup (apparently) don't have enough bandwidth for the job. So far I've circumvented with one monitor connected directly to the laptop via HDMI to achieve at least UHD at 60hz. the other monitor is via DP and runs FHD 60hz. Do I have other options to achieve the desired setup with three UHD displays? Should I swap WD19DC with WD19TB? Thanks in advance, Waylander  
Dual 4k 60Hz with Precision 5540 and WD19DC