Product Showcase (Innards)
So once we remove the screws we notice the SSD M.2 partition hidden under the heatsink we remove. Basically your PCIe daughter-board with an M2 SSD. As you can see it is properly cooled by thermal-padding leading towards the nice looking heatsink.
Here we can see the PCB a little better and see the Marvell controller. With these you get the full TRIM support and garbage collection under Windows 7/8/10 or deleting files off, will result in LBAs being TRIMed. If you look all the way upwards you can see a LED array, this reacts to writes and reads, in idle the LEDs fades in and out. We do not spot any extra data-protection here in case of a power failure.
Toshiba TH58TFT1WHLBAEG. The NAND memory in use is Toshiba fabbed TLC Stacked Vertical NAND at 15nm. You will find just two of these at the front-side holding 256GB per NAND chip. Yeah that's stacked NAND cells for you matey, otherwise you just cannot get so much storage volume in there.
Also what seems to be a LPDDR3 4Gb DRAM (512MB) chip is present for some xtra DRAM caching.
And down below as close as possible to the interface the controller, hard to read out but that is a Marvell 88SS1093 controller that offers hardware automated NVMe 1.1 support and 15nm TLC/MLC/SLC and 3D NAND.