Dell Force10 S25N-S50N Dell Force10 S50N and S50V Systems Quick Start Guide - Page 8

Step Task 1 Dell Force10 recommends that one person hold the chassis in place while a second person attaches the brackets to the posts. 2 Attach the bracket "ears" to the rack or cabinet posts, using two screws for each bracket. Ensure the screws are tightened firmly. Attach a Ground Cable to the S50N and S50V Chassis The S50V and S50N switches have both AC (3-prong plug receptacle) and DC (-48V terminal-type) connections on the back of the unit. They can use either power source independently or in combination, with the DC source in a backup mode (except for the 470W DC power supply). If you select AC and DC, the switch will only use the DC source after the AC source fails. NOTE: The rack installation ears are not suitable for grounding. CAUTION: Grounding conductors must be made of copper. Do not use aluminum conductors. NOTE: Coat the one-hole lug with an anti-oxidant compound prior to crimping. Bring any un-plated mating surfaces to a shiny finish, and coat with an anti-oxidant prior to mating. Plated mating surfaces must be clean and free from contamination. Attach a Ground Cable to the S50N-DC Chassis The S50N-DC switches have two terminal blocks on the right side (instead of an AC receptacle) for two DC power supply inputs. The terminal block on the right, as you face the back of the chassis, is matched to the DC1 status LED on the front left of the switch and the left block is matched to the DC2 status LED. 6 Installing the Hardware