Compatibility guide - difference between SAS 9211-4i and SAS 9211-8i

Hi,

I have to buy a compatible external PCI RAID / SAS Controler for a server (NEC Express 5800 Rg1).

The LSI MegaRAID SAS 9211-4i corresponds to my needs. I've checked the I/O compatibility guide, but only the LSI MegaRAID SAS 9211-8i appears on the list. The only difference between the 9211-4i and the 9211-8i seems to be the number of Sata ports (4 or 8).

Do you think that the 9211-4 will be OK if the 9211-8i is listed ? For some other products, like SAS 9220, 4i AND 8i are listed in the compatibility guide...

Thanks

Michael