MikroTiks new CRS112-8P-4S-IN is eight Gigabit RJ45 ports PoE switch, that offers different power output options: auto sensing 802.3af/at PoE/PoE+ and Passive PoE, and four SFP ports provide optical fiber connectivity options to support up-links of up to 1 Gbps. License level 5 MikroTiks new CRS112-8P-4S-IN 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 Specifications CPU nominal frequency: QCA8511 Size of RAM: 128 MB Storage type: Flash Storage size: 16 MB 10/100/1000 Ethernet ports: 8 SFP ports: 4 Serial port: RJ45 PoE out: Yes, 802.3af/at Supported input voltage: 18 V - 57 V Dimensions: 200 x 143 x 40mm Operating System: RouterOS, level 5 license Max Power Consumption: 10 W Product Includes (1) Power Adapter 28 V 3.4 A (1) Rackmount ears (1) Power Cord (1) Screws Switching features Non-blocking Layer 2 switching capabilities 16K host table IEEE 802.1Q VLAN Supports up to 4K simultaneous VLANs Port isolation Port security Broardcast storm control Port mirroring of ingress/egress traffic Rapid Spanning Tree Protocol Access Control List MikroTik neighbor discovery SNMP 9204-byte jumbo frames support IGMP snooping static link aggregation Quick Specifications 8 Gigabit RJ45 Ports 4 SFP Ports Non-Blocking Throughout: 12 Gbps Switching Capacity: 24Gbps Forwarding Rate: 17.8 Mbps Maximum Power Consumption: 10 W (without PoE devices connected) Supports PoE+ IEEE 802.3at/af and 24 V Passive PoE Quiet, Fanless Operation Desktop-Rackmount MikroTik DS