You can add a 2.5” sata hdd or ssd to 7070/7060 M.  Re: does that mean there is another slot for memory expansion they both have 2 dimm slots and support 2x sodimm ddr4 memory. Minimum memory configuration Maximum memory configuration Number of slots Maximum memory supported per slot Memory options Type DDR4 DRAM Non-ECC memory Speed
If an Optiplex Micro desktop has one SSD drive, can an HDD be added to expand its storage space?  Also, if one such desktop is marked as 16 GB (1x 16GB) for the memory, does that mean there is another slot for memory expansion? And it is better to get additional memory than another one marked as 16 BG (2 x 8GB) right?
Optiplex Micro Memory & Drive Upgrade Possibility