cPanel versions 11.38 and above are eligible for SNI support. This means you are able to install your own SSL certificate.
Step 1: Log into your cPanel account
Step 2: Check the top to see if you have the latest CPANEL 11
Step 3: Then on the left hand side, click "Expand Stats" and scroll down to click on "Server Information"
Step 4: You should see the cPanel version listed here along with other software versions. This account has version 11.68.0.