CRS112-8P-4S-IN is an eight Gigabit RJ45 PoE switch, offering different power output options: auto-sensing 802.3af/at PoE/PoE+ and passive PoE, and four SFP ports provide fiber optic connectivity options to support uplinks up to 1 Gbps.
CRS112-8P-4S-IN is equipped with 12 independent switching ports.28 Volts @ 3.4 Amp A power supply is already included in the box.There is a secondary DC jack on the back of the enclosure that supports 48-57 Volts power (not included, can be purchased separately).CRS112-8P-4S-IN can power 802.3af/at devices if 48-57 VDC input is used (the unit will auto-detect and provide the correct power to the devices).The maximum current is 1 Amp per port if the input voltage is 18-28 Volts, 450 mA if 48-57 Volts. The total limit is 2.8A@24V and 1.4A@48-57V.
Important Note: When using the 48 ~ 56 V supply, it will only power 802.3af/at devices.