This new Inspiron design is nice and compact. It's easy to open up and work on. There's really not much you can do or add inside of the case. It has two open, half-height PCI-Express (x16 and x1) slots and that's about it. The integrated Wifi has a little antenna unit mounted to the case on the front bezel, but it's still not the greatest for speed and signal strength. You may want to invest in a PCI-Express x1 Wifi card and disable the on-board Wifi instead.It has an M.2 slot for the 256GB SSD, which is nice, but it's not the boot / OS drive by default; worth reformatting and reinstalling Windows 10 Home out of the box to switch that around with the 1 TB 7.2K spindle drive. It will make a big difference in booting up Windows.Just some side notes, no stars off for these because it's no reflection on the overall quality of the product.It's not a fastest machine, this one being an i3 processor, but it's the latest generation core from Intel right now. Don't expect miracles from Intel UHD 630 graphics. It's fine for general use, but it's certainly not going to provide any decent 3D graphics acceleration for gaming.