Chapter 5: Installing the Controller and Disk Drives ● 483 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 appearlevel with 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 17 ).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 17.7 Prepare and install your internal disk drives, following the instructions in Connecting DiskDrives to Your Controllers on page 50.If you are not installing internal disk drives, close your computer cabinet, reattach thepower cord, then continue with Connecting External Devices on page 53.Installing a RAID Controller with Zero Maintenance Cache ProtectionNote: On Adaptec Series 5Z and Series 6Q controllers, the flash module daughterboard is pre-installed. On Adaptec controllers with optional Zero Maintenance Cache Protection (see page19), the daughterboard is user installed. The supercapacitor module (used by all controllerswith Zero Maintenance Cache Protection) is never pre-installed. Refer to the flyer included inthe kit for details about installing the flash module daughterboard on the controller, as needed.Warning: (i) Do NOT remove or insert a fully charged supercapacitor module. Alwaysdischarge the unit first to avoid damage to the controller or flash backup module. Thefactory ships with discharged units, so they are safe to install when you receive them. Toensure that an installed unit is discharged, switch your system OFF, then wait 5 minutes.After a dirty shutdown, wait 3 minutes after backup is complete, then remove the unit.(ii) Do not attempt to connect a Battery Backup Module (see page 19) to an Adaptec RAIDcontroller with Zero Maintenance Cache Protection. The battery can overheat and may evenexplode!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 17.)Caution: Touch a grounded metal object before handlingthe RAID controller.!