No hardware option on Cubase LE for UR242

I have a UR242 interface and I am using a Cubase LE 9. According to the manual, there must be hardware monitoring in Cubase. However hardware doesn’t appear at the racks section of the Cubase. There is an explanation in the manual for that and I tried to do it but didn’t work. I don’t know if I did it correctly. I have also enabled “direct monitoring” for the device setup menu. Should I download the Cuabse AI 9 which was bundled with the device. I was already using Cubase LE so I didn’t want to use the licence unnecessarily.