The "OEM ESD" part of the name refers to the fact that this image is designed for original equipment manufacturers (OEMs) and is distributed through the Electronic Software Delivery (ESD) system. ESD is a digital distribution platform that allows OEMs to easily deliver software to customers.
Modern updates make this version easier to install on hardware that Windows 7 didn't originally support. Windows 7 SP1 DUAL-BOOT 31in1 OEM ESD pt-BR JAN...
Includes universal USB 3.x and NVMe support to prevent keyboard/mouse or hard drive failure during setup. The "OEM ESD" part of the name refers
If you need instructions for a (from official media), I am happy to write that article for you separately. Just ask. Windows 7 SP1 DUAL-BOOT 31in1 OEM ESD pt-BR JAN...
Here is why, along with the context you should know before proceeding further.