Upgrade my system RAM

I am using the Dell Server. My system was very slow and I decided to upgrade my RAM. I checked my system came with 8 GB RAM I bought another 8 GB RAM (Cisco MEM-4300-8G )and there is just one slot.

My question is

Is there any way to install two RAMs in my system?

@caroljames972022 welcome to the Rockstor community
Can you provide a few more specific on what Dell Server you are using? For some servers there are memory expansion boards that allow you to add more RAM. Alternatively, you can see to return your 8 GB stick, get the 16GB version and replace it in that single slot you have (if it’s then the only memory stick you have installed). Of course, only if your server supports that …