The RG-NBS31-48G4S-P is a PoE 52 port Gigabit Layer 2 managed network switch. The switch features 48 PoE+ ports plus 4 SFP ports with a 370W PoE budget supporting 802.3af and 802.3at, providing up to 30W power supply to the connected device. In addition, the switch will negotiate with the connected devices to adjust the PoE power automatically, thereby saving energy.
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For full terms & conditions, please see – Ruijie Warranty T&Cs.

| Total number of RJ45 ports | 48 |
| Total number of optical ports | 4 |
| Number of 1GE SFP ports | 4 |
| Number of 10GE SFP+ ports | No |
| Number of 10/100BASE-T ports | No |
| Number of 10/100/1000BASE-T ports | 48 |
| Number of 10/100/1000/2500BASE-T ports | No |
| Number of 100/1000/2.5G/5G/10GBASE-T ports | No |
| Module slots | No |
| Reset button | 1 |
| DIP switch | No |
| PoE Out standard | PoE/PoE+ (IEEE 802.3af/at) |
| Number of PoE Out ports | 48 |
| Number of PoE/PoE+ Out ports | 48 |
| Number of PoE/PoE+/PoE++ Out ports | No |
| PoE budget | 370 W |
| PoE power pins | 1–2 (+), 3–6 (-) |
| Power input | 220 V AC power supply: • Rated input voltage: 100 V AC to 240 V AC, 50/60 Hz • Maximum input voltage: 90 V AC to 264 V AC, 47 Hz to 63 Hz • Maximum input current: 6 A |
| Maximum power consumption | 46 W (with no PoE load) 450 W (with full PoE load) |
| Power output | No |
| Power supply | Fixed power supply |
| RAM | 512 MB |
| Flash memory | 256 MB |
| Forwarding rate | 77.38 Mpps |
| Switching capacity | 104 Gbps(bit/s) |
| Casing | Metal |
| Product dimensions (W x D x H) | 440 mm x 293 mm x 44 mm (17.32 in. x 11.54 in. x 1.73 in.) |
| Weight | 4.32 kg (9.52 lbs) (without packaging materials) |
| Shipping weight | 5.86 kg (12.92 lbs) |
| Hot swapping of fan modules | No |
| Fan | 2 x fixed fans |
| Cooling | Air cooling, side-to-rear airflow |
| Acoustic noise | 23°C(73.4°F):30 dB (with half PoE load) 50°C(122°F):48 dB (with full PoE load) |
| Mounting options | Rack |
| Hot swapping of cables | Service ports support hot swapping of cables. |
| MTBF | 400,000 hours |
| Operating temperature | 0°C to +50°C (32°F to 122°F) |
| Storage temperature | −40°C to +70°C (−40°F to +158°F) |
| Operating humidity | 10% RH to 90% RH (non-condensing) |
| Storage humidity | 5% RH to 95% RH (non-condensing) |
| Altitude | Operating altitude: 0 m to +5,000 m (0 ft. to +16,404.20 ft.) Storage altitude: 0 m to +5,000 m (0 ft. to +16,404.20 ft.) |
| Corrosion class | No |
| ESD protection | Contact discharge: 6 kV Air discharge: 8 kV |
| Surge protection | Service port: ±6 kV for common mode Power connector: ±6 kV for both common mode and differential mode |
| EMC | EN 55032 EN 61000-3-2 EN 61000-3-3 EN 55035 EN 300 386 |
| Safety compliance | IEC 62368-1 |
| Certification | CE |
| RADIUS | Yes |
| 802.1X authentication | Yes |
| Port-based 802.1X authentication | Yes |
| MAC address-based 802.1X authentication | Yes |
| Guest VLAN | Yes |
| PoE watchdog | Yes |
| Online upgrade | Yes |
| Maximum number of VLANs | 4094 |
| Maximum number of MAC address entries | 16000 |
| Interface flow control | Yes |
| MAC address-based VLAN | No |
| IP subnet – based VLAN assignment | No |
| IEEE 802.1Q VLAN | Yes |
| Basic QinQ | No |
| VLAN configuration supported on LAN ports | Yes |
| Voice VLAN | Yes |
| STP (IEEE 802.1d) | Yes |
| RSTP (IEEE 802.1w) | Yes |
| MSTP (IEEE 802.1s) | Yes |
| LLDP | Yes |
| LLDP-MED | Yes |
| Static MAC address | Yes |
| MAC address filtering | Yes |
| Static aggregation | Yes |
| LACP | Yes |
| Inbound or outbound rate limiting based on interface traffic | Yes |
| 802.1p priority-based traffic classification | Yes |
| DSCP priority-based traffic classification | Yes |
| Egress queues based on 802.1p and DSCP priorities | Yes |
| SP | Yes |
| WRR | Yes |
| SP+WRR | Yes |
| Global QoS | Yes |
| Jumbo frame length (MTU) | 9216 bytes (interface configuration mode) |
| EEE | Yes |
| Cable test | Yes |
| IPv4 static route | No |
| IPv6 static route | No |
| OSPFv2 | No |
| OSPFv3 | No |
| Maximum number of ARP entries | 1000 |
| ARP | Yes |
| IPv4 ping | Yes |
| IPv4 traceroute | Yes |
| IPv6 | Yes |
| ICMPv6 | Yes |
| IPv6 ping | Yes |
| IPv6 traceroute | Yes |
| DNS client | Yes |
| DNSv6 client | Yes |
| DHCP relay | No |
| DHCP server | No |
| DHCP client | Yes |
| IGMPv1 snooping | Yes |
| IGMPv2 snooping | Yes |
| Basic IGMPv3 snooping | Yes |
| Full IGMPv3 snooping | No |
| IGMP filtering | Yes |
| IGMPv1, v2, and v3 | No |
| Fan speed adjustment | Intelligent speed adjustment |
| Port mirroring | Yes |
| Mirroring | Yes |
| HTTP login | Yes |
| HTTPS login | Yes |
| RLOG | Yes |
| SON | Yes |
| Syslog | Yes |
| Client auto-discovery | Yes |
| PoE service failure | Yes |
| PoE power overload | Yes |
| SSH | No |
| Camera detection | Yes |
| Loop alarm | Yes |
| MAC address entries | Yes |
| IP address pool conflicts | Yes |
| Full ARP table | No |
| eWeb management | Yes |
| Ruijie Cloud management | Yes |
| Ruijie Reyee App management | Yes |
| SNMPv1, v2c, and v3 | Yes |
| System dual backup | Yes |
| Enabling dual backup for the partition Uboot (based on a single flash memory) | Yes |
| Load balancing | No |
| ERPS | Yes |
| Maximum number of ACEs | Number of ACEs in the inbound direction of an interface: 1900 Number of ACEs in the outbound direction of an interface: 0 |
| Port isolation | Yes |
| Broadcast storm control | Yes |
| Multicast storm control | Yes |
| Unknown unicast storm control | Yes |
| DHCP snooping | Yes |
| Standard ACL | Yes |
| Extended MAC ACL | Yes |
| Extended IP ACL | Yes |
| IPv6 ACL | Yes |
| IP-MAC-port binding | Yes |
| ARP anti-spoofing | Yes |
| IP source guard | Yes |
| CPU Protection Policy | Yes |
| Recommended camera limit | 200 W H265: 200 400 W H265: 100 |
| Device | 1 |
| Rubber pad | 4 |
| Power cord retention clip | 1 |
| Screw | 6 M4 x 8 mm cross recessed countersunk head screws |
| Grounding cable | 1 x 1 m (3.28 ft.) |
| Power cord | 1 x 1.5 m (4.92 ft.) |
| Rack-mount bracket | 2 |
| User Manual | 1 |
| Warranty Card | 1 |
View and download User Documents and Manuals directly from Reyee under the 'Resources' tab.