This 2 port ide ultra ata133 controller card can be installed in a pci slot to add more ide storage capability to your pc providing two ide drive channels with support for two drives per channel and data transfer rates of up to 133 mbps this adapter card can act as the primary boot device and replace built in ide ports or provide 2 additional high speed ports to the system designed to perform with high speed ide133 drives the adapter card also supports 100 mbps hard drives 66 mbps