External Power System Chassis 2. Accepts up to three Summit 750W AC PoE PSU 48V power supplies. Accepts up to 3 5 EPS-CBL-2x7 or up to 1 EPS-CBL-2x9 cables.

450W DC Power Supply module for Summit switches, Front-to-Back airflow

SX450-G2 Edge to Adv Edge Lic, ExtremeXOS Advanced Edge License upgrade for Summit X450-G2 series switches

SX450-G2 OpenFlow FeaturePack, ExtremeXOS SDN - OpenFlow Feature Pack for Summit X450-G2 series switches

RPS-500p, External PoE+ Redundant Power Supply Unit 500 Watts with cable, Power cord ordered separately

715W AC Power Supply Module - front to back airflow

SummitStack128 Stacking Cable, 1.0M

1100W AC Power Supply Module - front to back airflow

300W DC Power Supply Module - back to front airflow

1100W AC Power Supply Module - back to front airflow

BDX-CORE-LIC, Core license for the BlackDiamond X8 chassis for scalable Layer 3 rich applications & OpenFlow Feature Pack

SummitStack/UniStack Stacking cable, 1.5M

External Power System 500 Watts, with cable

External Power System Cable that connects EPS to any X440 for providing redundant DC power.

Conversion cable for SummitStack128 and SummitStack, 1.0M

External Power System Cable that connects EPS to a X250e-48p or a X450e-48p for providing additional DC power.

SummitStack/UniStack Stacking cable, 3.0M

BD 8800 Core License, BlackDiamond 8800 ExtremeXOS Core Software Upgrade & OpenFlow Feature Pack

SummitStack Stacking cable, 5.0M (not supported for UniStack)