Questions about OWC 1600DDR3S16P

Yes, the memory is compatible with your Mac mini Late 2012 (model A1347, 6.1). The model supports up to 16 GB DDR3 RAM at 1600 MHz, and the specified 1.35 V of the DDR3L memory is backwards compatible with the 1.5 V of the system. The SO-DIMM form factor fits and the 2x8GB configuration complies with the official specifications.

The product you're referring to is compatible with the 2011-2012 MacBook Pro models, which include the non-Retina display versions. However, for the mid-2012 MacBook Pro, it is generally compatible, but you should ensure that your specific model supports DDR3L RAM at 1.35V, as some models may require this specific voltage for optimal performance. The product's specifications match the requirements for these models, but always verify your laptop's specifications before installation.

Yes, that fits, a maximum of 16GB can be installed and I would also take advantage of that. These would also work, they are a bit more expensive but can be delivered faster, if that is a point. G.Skill Ripjaws (2 x 8GB, DDR3L-1600 (PC3-12800), SO-DIMM 204 pin)

This ram is only compatible with Mac Systems. Here is the ram for the Dell Optiplex 3020: Crucial Desktop Memory (1 x 8GB, DDR3L-1600, DIMM 240 pin) And here for the Lenovo X220: Crucial Laptop Memory (1 x 4GB, DDR3L-1600, SO-DIMM 204 pin)