Crs112-8p-4s-in is an eight gigabit rj45 port poe switch, that 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.
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 - product codes 48pow (1.46a 70w) and 48v2a96w (2a 96w)). crs112-8p-4s-in can power 802.3af/at devices if 48-57 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 and 1.4a-57v.