Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

1. Mac Os X 10.9.5 Update
2. Mac Os Version 10.9.5 Download Windows 10

If your macOS isn't up to date, you may be able to update to a later version.

@leocg Thanks but how would I determine that (i.e., which file is a 10.9.5-supported version of Opera) before selecting one to download? Doesn't Opera have this information somewhere at its website - i.e., information about which OS versions are required for particular Opera releases? It depends on the model machine you have. That 10.9.5 Maverics was released in 2014 through to 2016. Meaning your computer is likely no younger than that. This may create a problem. As Apple does not support old hardware indefinitely.

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.

This example shows macOS Catalina version 10.15 build 19A583.

Mac Os X 10.9.5 Update

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

Mac Os Version 10.9.5 Download Windows 10