Safety Information and Technical Specifi cations Overview of the SAS-216EL1/EL2 Backplanes The SAS-216EL1/EL2 series of backplanes consists of a SAS-216EB backplane (A) with one or two SAS-216EL daughter cards (B and C) mounted on the rear of the backplane. The SAS-216EL1 model consists of the SAS-216EB backplane (A) and one SAS- 216EL daughter card (C), mounted on the right-hand side of the backplane. The SAS-216EL2 model consists of the SAS-216EB backplane (A), and two SAS216EL daughter cards (B and C), mounted on the rear of the backplane. Components on the front side of the SAS-216ELB backplane include 24 SAS con- nectors and their respecitve activity and failure LEDs.
Components on the rear side of the backplane include jumpers and power and fan connectors. The daughter card's components include SAS ports, fl ash and expander chips, and mode select jumpers. Rear Side of the Backplane SAS-216EB Backplane (A) SAS-216EL Daughter Card (C) SAS-216EL Daughter Card (B) Front Side of the Backplane vii