MikroTik CRS328-4C-20S-4S+RM Rack switch with 20x| Alibaba.com
Plug and Play Powered by 12V2A Power Supply, Network Switch, Secondary Antithunder Gigabit POE Ethernet Switch, for Residential : Amazon.co.uk: Computers & Accessories
RPS150 | 150W Redundant Power Supply | TP-Link United Kingdom