Hard drive replacement on Asus ET2040IUK All-in-one Desktop PC

Hard drive replacement on Asus ET2040IUK All-in-one Desktop PC

I have an Asus ET2040IUK All-in-one Desktop PC, which is running rather slow. If I can find a way to open this machine, I will be able to replace it's spinning HDD with a SSD drive and get much better performance.