The M1 and M2 MacBook Air and Pro models don't have USB ports -- only USB-C. Yo can use the following adapter: USB-C to USB Adapter - Apple
Also be aware that Office 2011 will not run on a new MacBook Air or Pro (or on any Mac that is running macOS Catalina or later).
Microsoft does not provide free upgrades between major versions of their Office products (unless you subscribe to Microsoft 365) and older versions of Office are not compatible with macOS Catalina, Big Sur, Monterey or Ventura.
If you have a version of Microsoft Office that is not compatible, you can either subscribe to Microsoft 365 or you can make a one-time purchase. See: https://www.microsoft.com/en-us/microsoft-365/mac/microsoft-365-for-mac
Or use the free and very good Libre Office https://www.libreoffice.org/
or the free Microsoft Office on the web: https://products.office.com/en-us/free-office-online-for-the-web
or Google Docs: https://www.google.com/docs/about/
or Apple’s Pages and Numbers