HP J8770A Hewlett-Packard HP ProCurve networking / enterprise server hardware Datacentre Switch

The HP J8770A is a ProCurve Switch 4204vl, a 4-slot modular chassis switch from HP’s vl-series platform, providing the backplane, management and power infrastructure that vl-series line modules plug into to build out a site-specific port configuration. The vl series predates HP’s later zl-generation chassis switches and uses its own module form factor (not interchangeable with 5400zl/8200zl modules despite similar naming), and the 4204vl is the smaller 4-slot chassis in the range, sitting below the 8-slot 4208vl for sites that need modularity without the larger chassis’s capacity. Buyers acquiring a bare 4204vl chassis should expect to source line modules, power supply and fan tray separately if not already included, since the chassis on its own provides no active ports. HP supported the vl platform for a long service life. Tech-Star (UK-based, shipped worldwide) supplies ProCurve vl-series chassis switches for ongoing network maintenance.