HP ProCurve E5412zl modular managed network switch supporting up to 144 Gigabit Ethernet ports with optional Power over Ethernet (PoE) capability. This listing appears to reference a hardware maintenance or support service package (9X5XNBD code) associated with this switch model, though the exact nature and pricing of the service could not be verified.
Specification
Modular chassis design with 12 open slots for expansion modules
Support for up to 144 Gigabit Ethernet ports (configurable)
Optional Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet modules
Power over Ethernet (PoE) module support available
VLAN support and Quality of Service (QoS) capabilities
Redundant power supply options (up to four internal power supplies)
Managed switch with advanced traffic management and security features
Spanning Tree Protocol and link aggregation support