HP J9579A is a 3-meter stacking cable designed for HP ProCurve 3800 series switches. This cable enables high-speed interconnection between eligible 3800 switch units, supporting stacked configurations for simplified management and increased port density. The connector type and pinout match HP's proprietary stacking specifications for seamless daisy-chaining of compatible switch models. Typical deployments include enterprise core and distribution layer networks where multiple switches require consolidated control. The 3m length accommodates standard rack and cabinet spacing in data center environments. Supports stacking throughput appropriate to the connected switch fabric. Compatible with ProCurve 3800 hardware revisions supporting stacking mode. All cables are tested and guaranteed. Available via quote.