1. hard disk: this one has 5 12GB SSD. Consider adding a hard disk, or replacing the original hard disk with a larger SSD.
2.SSD: This model has an M.2 interface and supports the SSD of M.2280 If you need to install SSD, you can choose this interface.
3. Memory: This model has 4 memory slots and can support up to 32GB of memory. If you need to add memory, you can choose to buy a memory stick and plug it in.
It should be noted that installing the hard disk or memory requires disassembly. If you are not familiar with the disassembly process, it is recommended to contact a professional for operation. Regarding the number of trays and SSD shape, you can consult the official after-sales personnel of Shenzhou.