i have a Macbook pro retina (mid 2014) and i have noticed that write speeds are slow (140 MB/s - 200 MB/s). when i go to system report and go to PCI there is nothing, but when i go to SATA there is the ssd. Macbook pro retina (mid 2014) is supposed to use PCIe but looks like mine is using SATA. which is quite annoying and weird.


MacBook Pro (Retina, 13-inch, Mid 2014), Other OS, Yosemite 10.10.3