: Electronic Software Delivery. This means the installation files are highly compressed into a .esd format (rather than the standard .wim ), making the overall ISO file size much smaller. PT-BR : The system language is Brazilian Portuguese .
: Designed to automatically detect and activate using the digital license embedded in the motherboard of branded PCs (like Dell or HP). Post-Install Activation windows 7 sp1 dualboot 31in1 oem esd ptbr jan
The "OEM" in the title means:
Given that Windows 7 is now over 15 years old, consider: : Electronic Software Delivery
This specific release (January 2020) should contain: : Designed to automatically detect and activate using
: Often includes community tools like DAZ Loader or KMS for standard installations. Modern Hardware Support
: This refers to the Portuguese (Brazil) language pack. It indicates that the version of Windows is intended for use in Brazil and includes language support for Portuguese.