SFP uplink ports on a POE switch provide a flexible means of expanding the network by connecting to other switches, routers, or servers over a fiber optic cable. This is useful when the distance between devices is too great for traditional copper Ethernet cables. Unmanaged PoE fiber switch with 24*10/100M RJ45 ports and 2*10/100/1000M uplink RJ45 ports and 2*1000M SFP fiber combo ports. Port 1-24 can support IEEE 802. It built-in 400W power supply and 1U/19" cabinet installation. OVERVIEW The ONV-POE31108PFM is Gigabit uplink L2 managed. Full Gigabit PoE+ Switch with 2 UpLink SFP Port Exchange mechanism using storage and forwarding, All ports support line-speed switching Compatible with IEEE802. 3af/at PoE switch determines and delivers the exact power supply to your devices with up to 30W power output If a device not. Various port combinations, rate increase, installation in a concealed telecommunication box, recommended for indoor use, aesthetically pleasing design, and security The Ethernet architecture and novel Fiber-to-the-Room (FTTR) deployment delivers 1G fiber-to-the-room access. This switch provides 16. 24-Port gigabit Layer 3 managed PoE switch, 4 SFP+ uplink Enterprise-class Quality Ensures High Performance 6KV surge protection reduces the possibility of port damage Multiple Security Policies Pro.