This is a used Unify Switch 24 (US-24-250W) from an old school. It has dimensions of 442.4 x 200 x 43.7 mm (17.4 x 7.9 x 1.7') and weighs 2.7 kg (6 lb) without mounting brackets or 2.8 kg (6.2 lb) with them. The enclosure is made of SGCC steel. It features an Ethernet In-Band management interface, 24 GbE RJ45 ports, and 2 1G SFP Ethernet ports. With a total non-blocking throughput of 26 Gbps, a switching capacity of 52 Gbps, and a forwarding rate of 38.69 Mpps, it offers excellent performance. It uses a universal input power method (100 - 240V AC, 50/60 Hz), has an internal AC/DC 36W power supply, and a max power consumption of 25W. It also has ESD/EMP protection (Air: ± 16kV, contact: ± 12kV), a 1.3' touchscreen LCM display, and a factory reset button. It operates in a temperature range of -5 to 45° C (23 to 113° F) and a humidity range of 10 to 90% noncondensing. It is certified with CE, FCC, and IC. The LEDs show system status, Ethernet speed/link/activity, and SFP link/activity. It requires UniFi Network version 7.2.94 and later.

Using this Unify Switch is easy. First, make sure your UniFi Network is at version 7.2.94 or later. Connect the switch to your power source using the provided power supply. The universal input means it can work with 100 - 240V AC. Then, connect your devices to the Ethernet ports (24 GbE RJ45 and 2 1G SFP ports). You can manage it through the Ethernet In - Band interface. When it comes to temperature, keep it in an environment between -5 to 45° C (23 to 113° F) and humidity between 10 to 90% non - condensing. For maintenance, you can use the factory reset button if there are any issues. Check the LEDs regularly to monitor the system status, Ethernet activity, and SFP link. Make sure to handle it gently as it has ESD/EMP protection, but rough handling could still cause problems. Also, keep it away from liquids as it may damage the internal components.