MikroTik CRS328-4C-20S-4S+RM MikroTik Cloud Router Switch CRS328-4C-20S-4S+RM is a managed switch from MikroTik equipped with 4 Combo ports (SFP + Ethernet), 20 SFP slots and 4 SFP+ slots. These ports can also be selected programmatically, so if you have all eight cables connected, you can use scripts to decide which four Combo ports will be active. Thanks to the Dual Boot function, the user can choose one of the device's two operating systems - SwitchOS or RouterOS (Level 5). Two SwitchOS operating systems provide Layer2 switch functionality, supports the IEEE 802.1Q standard, up to 4K VLAN ID simultaneously, port security, port isolation, IGMP snooping and connection aggregation. However, when using RouterOS, we have full access to the Layer3 function, similarly to other MikroTik products. Perfectly selected components CRS328-4C-20S-4S+RM is based on the Marvell 8DX3236A1 processor clocked at 800 MHz and the 98DX3236A1 switch chip used, among others, in CRS328-24P-4S+RM or CRS326-24G-2S+RM. An additional advantage of the device is 512 MB RAM. The maximum throughput (non-blocking) is 64 Gb/s and the transfer speed is 95.2 Mp/s. The device is shipped in a 1U rack-mounted enclosure with two 100-240V power supplies with failover functionality. The RJ-45 console port is used for management and debugging, and the mode button can be customized to execute any RouterOS commands. Key features 4 SFP+ slots 4 Combo Ethernet/SFP ports Dual boot - SwitchOS/RouterOS 2 built-in AC power supplies 20 SFP slots 512 MB RAM Switch chip 98DX3236A1 Marvell 8DX3236A1 processor clocked at 800 MHz