This is what my Mobo says. I don't know that it means 3 or more or JUST up to 3.
DualBIOS™ 3TB+ HDD Support (Hybrid EFI Technology)
My Mobo is : Gigabyte GA-990FXA-UD5 (rev.
+ Reply to Thread
Results 1 to 3 of 3
it means that your motherboard support hard drives larger then 3 TB hence the + sign.
This has nothing to do with how many hard drives your motherboard support, it depends on how much sata ports there are.