Chapter 5: Installing the Controller and Disk Drives ● 39Before You Begin● Read Safety Information on page 137.● Familiarize yourself with your Adaptec RAID controller’s physical features and the RAIDlevels that it supports (see page 16).● Ensure you have the right quantity of disk drives for the RAID level you want to use foryour arrays (see page 35).● Ensure that you have the proper cables for your controller and disk drives (see page 35).● If you are installing a low-profile RAID controller into a low-profile computer cabinet,replace the original full-height bracket with the low-profile bracket included in the kit.Caution: Handle the controller by its bracket or edges only.Installing the ControllerThis section describes how to install your Adaptec RAID controller into your computer cabinet.1 Turn off your computer and disconnect the power cord. Openthe cabinet, following the manufacturer’s instructions.2 Select an available PCIe expansion slot that’s compatible withyour RAID controller and remove the slot cover, as shown atright. (PCIe bus compatibility is marked to the controller figuresin About Your RAID Controller on page 16.)Caution: Touch a grounded metal object before handlingthe RAID controller.3 As shown at right, insert the RAID controller into the expansionslot and press down gently but firmly until it clicks into place.When installed properly, the RAID controller should appear levelwith the expansion slot.4 Secure the bracket in the expansion slot, using the retention device(for instance, a screw or lever) supplied with your computer.5 Connect your computer’s disk activity LED cable to the LEDconnector on the controller ( marked on the figures in AboutYour RAID Controller on page 16 ).Ensure that the positive lead of the LED cable (usually a redwire or a wire marked with a red stripe) is attached to pin 1.6 Optional—Connect your RAID controller’s I2C connector (not available on all models) toan I2C connector on an internal backplane or enclosure, using an I2C cable. For moreconnection details, see About Your RAID Controller on page 16.7 Prepare and install your internal disk drives, following the instructions in Connecting DiskDrives to Your Controllers on page 40.If you are not installing internal disk drives, close your computer cabinet, reattach thepower cord, then continue with Connecting External Devices on page 41.!!