General Information HP 1820 Switch Series devices are basic smart-managed, fixed-configuration Gigabit Ethernet Layer 2 switches designed for small businesses looking for key features in an easy-to-administer solution. The series consists of 6 switches including 8-, 24-and 48 port Gigabit Ethernet switches and 8-, 24-, and 48 port Gigabit PoE+ models each providing non-blocking Gigabit per port performance. Some models include SFP ports for fiber connectivity and some are fanless, making them ideal for office deployments. All 1820 Switches support flexible installation options, including mounting on wall, under table, or on desktop. The 8-port Gigabit Ethernet model can be powered by an upstream Power over Ethernet (PoE) switch for environments where no line power is available. These Gigabit switches are plug-and-play out of the box, yet network operation can be fine-tuned through features available from a simple web browser-based GUI, if necessary. Customizable features include VLANs, Rapid Spanning Tree, IGMP Snooping, link aggregation trunking and DSCP QoS policies. All models include the latest energy-saving capabilities, including Energy Efficient Ethernet (EEE) and idle-port power down. Interfaces/Ports Total Number of Network Ports: 48 Token Ring Port: No LRE Port: No Uplink Port: No Bypass: No Modular: No Management Port: No USB: No Stack Port: No Number of Network (RJ-45) Ports: 48 Port/Expansion Slot Details: 48 x Gigabit Ethernet Network Port/Expansion Slot Details: 4 x Gigabit Ethernet Expansion Slot Media & Performance Media Type Supported: Twisted Pair Media Type Supported: Optical Fiber Ethernet Technology: Gigabit Ethernet Network Technology: 10/100/1000Base-T Network Technology: 1000Base-X I/O Expansions Number of Total Expansion Slots: 4 Expansion Slot Type: SFP Shared SFP Slot: No Number of SFP Slots: 4 Network & Communication Layer Supported: 2 Management & Protocols Manageable: Yes Management: Web based management DHCP VLAN QoS SNMP v1,v2c Memory Standard Memory: 128 MB Memory Technology: SDRAM Flash Memory: 16 MB Reliability MTBF: 540754.80 Hour Power Description PoE (RJ-45) Port: No Input Voltage: 120 V AC Input Voltage: 230 V AC Power Source: Power Supply Physical Characteristics Color: Gray Compatible Rack Unit: 1U Form Factor: Rack-mountable Form Factor: Desktop Form Factor: Under Table Form Factor: Wall Mountable Height: 1.7″ Width: 17.4″ Depth: 9.7″ Weight (Approximate): 7.30 lb Miscellaneous Package Contents: 1820-48G Switch Rack Mount Kit Warranty Limited Warranty: Lifetime Certifications & Standards: Safety: UL 60950-1 CAN/CSA 22.2 No. 60950-1 EN 60825 IEC 60950-1 EN 60950-1 Emissions: FCC Class A EN 55022/CISPR-22 Class A VCCI Class A Immunity: Generic: EN 55024, CISPR 24 EN: EN 55024, CISPR 24 ESD: IEC 61000-4-2 Radiated: IEC 61000-4-3 EFT/Burst: IEC 61000-4-4 Surge: IEC 61000-4-5 Conducted: IEC 61000-4-6 Power frequency magnetic field: IEC 61000-4-8 Voltage dips and interruptions: IEC 61000-4-11 Harmonics: EN 61000-3-2, IEC 61000-3-2 Flicker: EN 61000-3-3, IEC 61000-3-3 IEEE Standards: 802.1D Spanning Tree Protocol 802.1p Priority 802.1Q VLANs 802.1W Rapid Spanning Tree Protocol 802.3ad Link Aggregation Control Protocol (LACP) 802.3x 802.3 802.3u 802.3ab 802.3z Product images may differ from actual product appearance.