• Four hard-drive backplane• Eight hard-drive backplaneRemoving The Hard-Drive BackplaneCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.1. If installed, remove the front bezel2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.3. Open the system.CAUTION: To prevent damage to the drives and backplane, you must remove the hard drives from the systembefore removing the backplane.CAUTION: You must note the number of each hard drive and temporarily label them before removal so thatyou can replace them in the same locations.4. Remove all hard drives.5. Disconnect the SAS/SATA/SSD data, signal, and power cable(s) from the backplane.6. Press the release tabs and slide the backplane upward.Figure 45. Front View of the Four Hard-Drive Backplane1. hard-drive connectors (4)2. SAS connector3. power connector for optical driveFigure 46. Rear View of the Four Hard-Drive Backplane1. hard-drive backplane2. backplane signal connector3. backplane power connector85
