RAID controller in x16 slot on Precision 3620...

Hello everyone,

Is the single x16 slot on a Dell Precision 3620 tower reserved for only graphics card use?

Or, could I use a x8 LSI MegaRAID 9271-4i in the slot instead?

I did a lot of searching and didn't come up with a definitive answer to this question.

Thanks in advance for your help!

bks