With my 16 port unifi PoE switch dieing I needed something cheap, while browsing eBay I found a HP 5500 and was able to
make offer of $90 shipped.
Reading all docs I figured it was a procurve which has a Cisco like CLI, but man I was way wrong. Thankfully I was able to find a manual HERE. Took some time to learn, but it just works for my needs.
I really only need PoE and VLANS. As of now I have my Spectrum router powered via PoE, my backup internet via Calyx also powered via PoE all pass thru’d via VLANs to my opnSense router in Proxmox over 4 NIC LAG.