8+4 Port Gigabit Managed Switch: 8 x RJ-45 Ethernet Ports with Po E+ 4 x Combo RJ-45 or SFP (Fibre Module) Ports Po E (Power-over-Ethernet) for IP phones, wireless access points, IP Cameras etc. Fanless for silent operation with generous 140w Po E Power budget 802.3af (Po E) & 802.3at (High Power Po E) 802.1q VLANs (Tag, Port & MAC-based) Access Control List (ACL) Secure Networking with 802.1x Port Security, IP Source Guard & DHCP Snooping Qo S for Application traffic prioritisation Voice & IP Camera VLANs for auto Qo S prioritisation via MAC address OUI Port Mirroring & Link Aggregation IGMP Snooping/ Querier & IPv 6 MLD Snooping IPv 4 & IPv 6 Support Centrally managed or standalone operation Console Port for CLI configuration Desktop, Wall or Rack mountable The Vigor Switch P2121 is a silent, high-performance, Gigabit smart switch with Po E+ (Power over Ethernet) on 8 RJ-45 ports. With the increase in Po E powered devices requiring full power, notably wireless access points & IP cameras, the generous 140W power budget is much higher than many other products in its class without fan cooling. The switch can be used simply on a desk, or securely fitted to a wall / shelf, or rack mounted (1u) with the included mounting brackets. The Dray Tek Vigor Switch P2121 has 4 Gigabit SFP module ports which can be used instead of the corresponding RJ-45 ports Nos. 9-12. SFP slots are typically used for fibre transceivers. In comparison to copper (RJ-45) cables, using fibre for connectivity provides longer range & resilience from electrical interference. The SFP ports provides compatibility with your choice of SFP modules (not included) & therefore the most appropriate medium for your application. If you use the SFP slots, then the corresponding copper port is not active but the others remain available. The Vigor Switch P2121s Serial (RS232) Console port & SSH server allow for full configuration & management of the Vigor Switch through its command line interface (CLI).