| Model | 
SG250X-48P-K9-EU | 
| Performance | 
| Switching capacity and forwarding rate | 
Capacity in Millions of Packets per Second (mpps) (64-byte packets): 130.94 Switching Capacity in Gigabits per Second (Gbps): 176 | 
| Jumbo frames | 
Frame sizes up to 10 KB supported on 10/100 and Gigabit Ethernet interfaces (9 KB for SG200-08 and SG200-08P) | 
| MAC table | 
Up to 8,000 MAC addresses | 
| Total system ports | 
48 Gigabit Ethernet + 4 10 Gigabit Ethernet | 
| RJ-45 ports | 
48 Gigabit Ethernet | 
| Uplink ports | 
2 10 Gigabit Ethernet copper + 2 SFP+ | 
| Layer 2 Switching | 
| Spanning Tree Protocol (STP) | 
Standard 802.1d STP support Fast convergence using 802.1w (Rapid Spanning Tree [RSTP]), enabled by default | 
| Port grouping | 
Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP): Up to 4 groups, Up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation | 
| VLAN | 
Support for up to 256 VLANs simultaneously (out of 4096 VLAN IDs). 16 VLANs supported in SG200-08 and SG200-08P Port-based and 802.1Q tag-based VLANs | 
| Voice VLAN | 
Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS | 
| Internet Group Management Protocol (IGMP) versions 1 and 2 snooping | 
IGMP limits bandwidth-intensive multicast traffic to only the requesters; supports 256 multicast groups (16 for SG200-08 and SG200-08P) | 
| Head-of-line (HOL) blocking | 
HOL blocking prevention | 
| Security | 
| IEEE 802.1X (Authenticator role) | 
802.1X: RADIUS authentication, MD5 hash | 
| Port security | 
Locks MAC addresses to ports, and limits the number of learned MAC addresses | 
| Storm control | 
Broadcast, multicast, and unknown unicast | 
| DoS prevention | 
DoS attack prevention | 
| Quality of Service | 
| Priority levels | 
4 hardware queues | 
| Scheduling | 
Strict priority and weighted round-robin (WRR) Queue assignment based on differentiated services code point (DSCP) and class of service (802.1p/CoS) | 
| Class of service | 
Port based, 802.1p VLAN priority based, IPv4/v6 IP precedence/type of service (ToS)/DSCP based, Differentiated Services (DiffServ) | 
| Rate limiting | 
Ingress policer, per VLAN and per port | 
| Power over Ethernet | 
| 802.3af PoE or 802.3at PoE+ delivered over any of the RJ-45 network ports within the listed power budgets | 
Switches support 802.3af, 802.3at, and Cisco pre-standard (legacy) PoE with maximum power of 30 W per port. This applies to the following PoE-enabled models; the maximum number of ports providing PoE power simultaneously is determined by the total PoE budget for the switch listed as below: PoE Power Budget: 382 W Number of Ports That Support PoE: 48 | 
| Pre-standard PoE | 
Support Cisco Pre-Standard PoE | 
| Intelligent PoE power management | 
Support the granular power negotiation with CDP/LLDP communication with PD devices after IEEE classification | 
| Environmental | 
| Dimensions (W x H x D) | 
440 x 44 x 350 mm | 
| Unit weight | 
4.84 kg | 
| Power | 
100 to 240V 50 to 60 Hz, internal, universal |