In Part 2 of my new NAS build, I focus on a simple quality-of-life upgrade that makes a rack-mounted storage box way more usable day-to-day: adding front-access USB 3.0 ports. I start by tearing down the 4U rack case so I can safely work on the front panel, then I lay out exactly where the two USB 3.0 connectors are going to live. The goal here is clean, functional, and repeatable—something you can do in your own home lab without turning the front of your case into a jagged mess. From there I walk through the actual mod: using a template to mark the cut, drilling pilot holes, stepping up to larger drill bits, and then finishing the opening with a Dremel so the bracket fits correctly. Once the cutout is right, I mount the USB 3.0 ports, add a cover to clean up the switch/LED area, and then reassemble the case so it looks like it was meant to be that way from the factory. If you’re building a NAS for a rack and you’re tired of reaching around to the back every time you need to plug in a drive or a tool, this is one of those small upgrades that pays off immediately.