Updating your bios hp a520n
I hope that I have answered your question to your satisfaction.
You need a computer running Windows 7, Windows 8, or Windows 10 to install Office 2013 or Office 2016.
Here’s how to check what BIOS version your computer is using and flash that new BIOS version onto your motherboard as quickly and safely as possible. If your computer freezes, crashes, or loses power during the process, the BIOS or UEFI firmware may be corrupted.To put that in perspective, according to Net Applications’ figures, Windows XP is still the third-most popular desktop OS, trailing only Windows 7 (51.9%) and Windows 10 (14.2%).And there are more PCs running XP than Windows 8.1 (9.6%), and all versions of Mac OS X combined (7.8%).I don't see why you can't connect the 4 - in1 USB multicard reader you have.Until the operating system detects and installs, you should be fine.