MikroTik RouterBoard's RB-CRS328 is a 28 independent port switch. It has 24 Gigabit Ethernet ports, which offer different power output options: Passive PoE, Low Voltage PoE, 802.3af/at (Type 1 “PoE” / Type 2 “PoE+”) with auto-sensing. The four SFP+ ports provide up to 10 Gbps connectivity options via either optical fibre or Ethernet modules (not included).
It comes in a 1U rackmount case with a built-in 100-240V AC 500W power supply.
The device has a “Dual boot” feature that allows you to choose between two operating systems - RouterOS or SwOS.
Cost: price on request due to exchange rate fluctuations