MikroTik CRS112-8P-4S-IN, 8x Gigabit Ethernet Smart Switch with PoE-out, 4x SFP cages, 400MHz CPU, 128MB RAM, desktop case, RouterOS L5. The eight Gigabit RJ45 ports PoE switch offers different power output options: autosensing 802.3af at PoE PoE and Passive PoE, and four SFP ports provide optical fiber connectivity options to support uplinks of up to 1 Gbps. is equipped with 12 independent switching ports. 28 V 3.4 A power supply is already included in the box. There is secondary DC jack on the back of the enclosure that supports 48-57 V power supply (not included, can be purchased separately). CRS112-8P-4S-IN can power 802.3af at devices if 48 V DC input is used (unit will automatically detect and provide correct power to devices). Max current is 1 A per port if input voltage is 18-28 V, 450 mA if 48-57 V. Total limit is 2.8A@24V and 1.4A@48-57V.