The Gold P31 comes in a simple, yet attractive, black box with what appears to be a large, gold "nugget" on the front. Unfortunately, there isn't a lot of information regarding the drive's specification or features. If you want detailed product information, you will need to visit SK hynix's website.
Like most manufacturers, SK hynix doesn't include a lot of extras with the Gold P31. Aside from the SSD, the only other things in the box were a couple of small, fold out guides containing warranty information as well as some brief installation instructions.
The Gold P31 uses the 2280 form factor for M.2 (NGFF) SSDs. It measures 22 x 80 x 2.23 mm and tips the scales at 7g. The drive also has an "M key" edge connector which provides PCIe SSDs with up to 4x lanes of bandwidth.
The Gold P31 is the first drive to utilize SK hynix's "Cepheus" ACNT038 controller. Not much is known about this controller aside from that it has four channels and was designed and produced in house.
For the 1TB version of the Gold P31, SK hynix has opted to use its own 128-layer 3D TLC NAND flash. If you'd remove the sticker, you'd see that there are two 512GB NAND flash packages on the top of the PCB. The drive also has a single 1GB LPDDR4 DRAM chip that is used for caching.