HP J9021A Hewlett-Packard HP ProCurve networking / enterprise server hardware Datacentre Switch

The HP J9021A is a ProCurve Switch 2810-24G, a managed Layer 2 switch with 24 auto-sensing 10/100/1000 copper ports plus 4 SFP slots for fibre uplinks. It supports VLANs, spanning tree, QoS and other standard managed-switching features, and its combination of Gigabit copper density with dedicated fibre uplink slots makes it a common aggregation switch for mid-sized office and campus wiring closets. As a fixed-configuration switch it operates standalone, though multiple 2810 units are often deployed together across a site under common management. This unit is the correct replacement for a failed or end-of-life 2810-24G already in service. Specifiers should confirm firmware version and required SFP transceiver types before ordering. Tech-Star (UK-based, shipped worldwide) stocks and tests this as part of its refurbished HP range, for maintenance, redundancy or expansion of 2800-series deployments.