R320 WD HDD Showing Up as SSD in PERC S110

As the title suggests, I'm having a really weird problem. I was trying to expand the storage in my Dell R320 server. Going from two 1tb drives (that came with the server) in Raid 1, to four 1tb drives in Raid 10. I purchased two Western Digital 1tb RE drives. After putting them in the server, and checking the S110 Configuration Utility, I'm stuck on the part with "Select Media Type". If I choose, HDD, it has the two Dell drives selected, if I hit SSD, it shows the two WD drives. If I select both, it lets me check all four drives but gives me a warning that I can't mix drive types. My only RAID options are Volume, 0, and 1. 

Purchased Drives