The seller packaged this very poorly in a loose envelope so the piece of plastic holding the seal has broken off and there is no way to reattach it . It doesn't matter as it sits between the dock and the laptop and doesn't need to be locked unless you're constantly moving the dock. Strangely enough, you have to buy it separately for the dock, it should simply be included in the kit and then not used up unnecessarily. I had to buy two of these for two different laptops.
Dell 452-BCYT D6000 Universal Dock in Black: A Hassle-free Single Solution
17 Review
Enhanced HP USB-C/A Universal Dock G2 - Optimal for Seamless Connectivity (Part#: 5TW13AA#ABA)
11 Review
Experience Seamlessly Connected Productivity: USB C Hub Docking Station with Triple Display, Dual HDMI 4K, DP, PD Charger, Gigabit Ethernet, USB Ports, SD/TF Card Reader - Ideal for MacBook Pro and Windows
11 Review
Docking Station OKX Display Ethernet
11 Review
16" Notebook Apple MacBook Pro 16 Late 2019 3072x1920, Intel Core i7 2.6 GHz, RAM 16 GB, DDR4, SSD 512 GB, AMD Radeon Pro 5300M, macOS, MVVL2LL/A, silver, English layout
55 Review
Backpack XD DESIGN P705.571 black
32 Review
10.3" Lenovo Tab M10 FHD Plus 2nd Gen TB-X606F (2020), RU, 2/32 GB, Wi-Fi, Silver
47 Review
Xiaomi Classic Business Backpack Blue Backpack
56 Review