SGS-6341-16S8C4XR Layer 3 16-Port 100/1000X SFP + 8-Port Gigabit TP/SFP + 4-Port 10G SFP+ Stackable Managed Switch (100~240V AC, 36-75V DC) Datasheet Manual Firmware Features24 100/1000BASE-X mini-GBIC/SFP slotsEight 10/100/1000BASE-T RJ45 copper ports, shared with Port-1 to Port-84 10GBASE-SR/LR SFP+ slots, compatible with 1000BASE-SX/LX/BX SFPRJ45 to DB9 console interface for switch basic management and setup1 USB2.0 interface for configuration and firmware storageSupports PIM-DM (Protocol Independent Multicast – Dense Mode) and PIM-SM (Protocol Independent Multicast – Sparse Mode) and PIM-SSM (Protocol Independent Multicast – Source Specific Multicast)Supports DVMRP (Distance Vector Multicast Routing Protocol)Supports IGMP v1/v2/v3 and MLD v1/v2 Dimension