Thank you for buying via links and ads on this site,
which earn me advertising fees or commissions.
As an Amazon Associate I earn from qualifying purchases.
which earn me advertising fees or commissions.
As an Amazon Associate I earn from qualifying purchases.
Other World Computing...
B&H Photo...
Amazon
As an Amazon Associate I earn from qualifying purchases.
B&H Photo...
Amazon
As an Amazon Associate I earn from qualifying purchases.

Get all the tools you need to upgrade the factory HDD of any 2009-2019 iMac to a larger HDD or a modern SSD.
2012 MBP Retina — Thunderbolt Ethernet Adapter
Apple sells a Thunderbolt-to-Ethernet adapter. Mine arrived in the box with the MacBook Pro itself, as I ordered it with the MBP.
If you connect to an ethernet network, get this adapter.
It’s small, it’s convenient, it’s cheap, and it speed blows away wireless speed.

Performance
I observed sustained transfers of large files in the 85-90 MB/sec per second range (that’s ~ 700 megabits per second!), vastly faster than wireless can mange.