As described this product does the job. If you are going to install windows home server on the drives connected with this raid card you will need to dig around for alternative drivers because the drivers that come with it do not work. Works perfectly with Linux (Ubuntu Server, Freenas, etc.)Speed is probably going to be limited by your PCI bus. Had no complaints with speed with disks arranged w/ RAID or w/o RAID. If you putting this in headless unit detecting RAID failure will be extremely difficult.