20 Port Gigabit - PoE Budget 240W - 8x PoE at - 8x GbE - 4x SFP - DIN, fanless - Fanless metal housing with optimized heat dissipation - Supports Spanning Tree STP(802.1D) and RSTP(802.1W) and MSTP(802.1s) - Supported Advanced management via WEB, CLI, TELNET, SSH, SNMP. - Dual firmware backup - Supports PoE management, such as PoE schedule, PoE PD-alive, Port PoE Priority, Soft-reboot PoE Nonstop - Supports G.8032 quick ring protocol. Self-recovery time <20ms - Supports IEEE1588 v2, transparent clock (TC) - Supports cable diagnostics, DDM, SFP digital diagnostic monitoring - Easy to use as a desktop, wall mount or DIN rail device - Extended temperature range of -40°C ~ +75°C - Robust Metal housing - Table, wall or DIN rail mounting possible - The 48V power supply is not included in the scope of delivery (see accessories). The power must be selected according to the connected PoE devices.