These are the only operating systems and web browsers that the Library recommends and is able to support. Using other browsers, or using earlier versions of these four, may produce unreliable results. For best results, use the most recent versions of operating systems and web browsers.
Your Mac should be running at least macOS 10.13: High Sierra (Lobo).
You should use only very recent versions of Chrome, Firefox, Microsoft Edge (Windows 10), or Safari for macOS.
In most cases, the interfaces for all the research services the Library provides have been written for use on current tablets and smartphones. While all possible devices and combinations of operating system and browser have not been tested, you should be able to use recent iOS or Android devices without any problems or lack of functionality. As is true of any computer, OS and browser combination, the more recent the version, the more likely you are to have a good working experience.