Powerful multi-port device The CRS328-24P-4S+RM is a 28-port switch. 24 Gigabit Ethernet ports offer various power options: passive PoE, low voltage PoE, 802.3af/at (type 1 "PoE"/type 2 "PoE+") with auto detection. PoE output is passed through B mode pins (4.5+/7.8-). Four SFP+ ports provide up to 10 Gbps via optical fiber or Ethernet modules. Dual boot function - possibility of choosing software. The CRS328-24P-4S+RM housing has a size of 1U and is intended for installation in a rack cabinet. The device has a built-in power supply 100-240 V AC, 500 W. Each port can deliver up to 30W of power with any power output option. The "Dual boot" function allows you to choose between two operating systems - RouterOS or SwOS. If you need a simplified operating system with specific switch features, choose SwOS, but if you want to use routing and other Layer 3 features in your CRS, use RouterOS. Switching features 16K host table IEEE 802.1Q VLAN Supports up to 4K simultaneous VLANs Port isolation Port protection Broadcast Storm Control Port mirroring STP/RSTP/MSTP Access control list MikroTik neighbor discovery SNMP 10218-byte jumbo frame support IGMP snooping IEEE 802.3ad and static aggregation link