If you have a license for an SSL with a third party, you can use it at AccuWeb Hosting by integrating it with the domain or hosting plan you have with us.
The external SSL can be used with a VPS easily, while for a shared hosting plan, you will need to get a dedicated IP for the SSL.
Note
Dedicated IPs with shared hosting plans are available, but limited plans are based on the server location, the billing cycle, and the plan's advancedness.
So, you need to check with our team to ascertain if the shared hosting plan you are buying can accommodate the third-party SSL.