Cisco WS-X4612-SFP-E. 4 12 1000BaseX (SFP) WS-X4612-SFP-E JAE1620001L. Cisco Catalyst 4500E Series 12-Port GE (SFP). The Cisco Catalyst 4500 Series is a centralized architecture that is designed to provide dedicated wire-speed bandwidth to each line-card slot within the chassis.
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