Product showcase

Before we can have a peek, we need to peel off the sticker. We'll test with it applied though.  The compact M.2 2280 (2280 = 80 mm) form factor ensures compatibility with next-generation desktop and mobile platforms that support the M.2 PCIe slot and interface. The front-facing side holds the controller, four NAND chips in total and a DRAM chip (cache) on each side of the PCB.

 
With the sticker removed we see the top of the SSD, it also holds two NAND chips on the top side and one DRAM chip sitting close to the controller. Typically this is set up in a 1:1 fashion, so it should be a 1024 DRAM cache buffer in total.
  

 
The chip read out as a Sandisk Series NVMe controller. The 'WD' controller is an 8-channel controller that makes use of the PCI Express 3.0 x4 (and not x2) interface and support both your regular and vertically stacked NAND flash. The controller supports the latest SLC/MLC/TLC and likely QLC as well as the latest 3D (vertically stacked) NAND (64-layer BiCs). 

 
Sandisk 05562 5120. that would be a single package of 512GB (x2). It is written at 3 bits per cell (TLC) aside from a write cache written at SLC. You'll find two flash NAND packages.