Cisco WS-C3750X-12S-S Switch FREE 5-Year Warranty Refurbished Cisco Stackable 12 Gigabit Ethernet SFP Ethernet ports, with 350W AC power supply 1 RU, IP Base feature set General Information Manufacturer Part Number: WS-C3750X-12S-S Device Type: Switch - 12 ports - managed - stackable Enclosure Type: Rack-mountable - 1U Ports: 12 x Gigabit SFP Performance: Switching fabric bandwidth : 160 Gbps Forwarding performance : 35.7 Mpps Jumbo Frame Support: 9216 Max Units In A Stack: 9 Routing Protocol: RIP-1, RIP-2, HSRP, static IP routing, RIPng Remote Management Protocol SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, SNMP 2c, TFTP, SSH, CLI Authentication Method: Kerberos, Secure Shell (SSH), RADIUS, TACACS+ Features: Hot swap module replacement, layer 2 switching, dynamic IP address assignment , DHCP support, auto-negotiation, ARP support, trunking, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, Syslog support, traffic shaping, Broadcast Storm Control, High Availability, Multicast Storm Control, Unicast Storm Control, Rapid Spanning Tree Protocol (RSTP) support, DHCP snooping, Dynamic Trunking Protocol (DTP) support, Port Aggregation Protocol (PAgP) support, Trivial File Transfer Protocol (TFTP) support, Access Control List (ACL) support, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco StackWise Technology, Per-VLAN Spanning Tree Plus (PVST+), Uni-Directional Link Detection (UDLD), Shaped Round Robin (SRR), Link Aggregation Control Protocol (LACP), Remote Switch Port Analyzer (RSPAN) Compliant Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.1ae RAM: 512 MB Flash Memory: 128 MB flash Status Indicators: Port status, link activity, port transmission speed, port duplex mode, power, system Product Line: Cisco Catalyst Model: 3750X-12S-S Compatibility: PC Manufacturer: Cisco Systems Packaged Quantity: 1 Expansion / Connectivity Interfaces: 12 x SFP (mini-GBIC) USB : 1 x 4 pin USB Type A 1 x console - mini-USB Type B - management 1 x RS-232 - RJ-45 - management 1 x 10Base-T/100Base-TX - RJ-45 - management Network stack device : 2 x Physical Characteristics Width: 17.5 inch Depth: 18.1 inch Height: 1.8 inch Weight: 15 lbs Power Power Device: Power supply - plug-in module Voltage Required: AC 120/230 V ( 50/60 Hz ) Features: Redundant Power System (RPS) connector Miscellaneous MTBF: 194,224 hour(s) Compliant Standards: TUV GS, CISPR 22 Class A, GOST, cUL, NOM, VCCI Class A ITE, EN55022 Class A, CB, AS/NZS 60950-1, AS/NZ 3548 Class A, CCC, RoHS, UL 60950-1, IEC 60950-1, EN 60950-1, KCC, FCC Part 15 A, CSA C22.2 No. 60950-1 Subcategory: Network hubs and switches Subtype: Gigabit Ethernet