ZOSI C2258. ZOSI 8-port PoE switch. By adding an ZOSI 8-port PoE switch, you can expand your 16-port NVR to support 24 channels (24CH). ZOSI 16-port PoE switch. By adding an ZOSI 16-port PoE switch, you can expand your 16-port NVR to support 32 channels (32CH).
