Hubs and Switches. Specifically designed for small businesses and offices, OfficeConnect hubs and switches provide costconscious

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1 data sheet s and Switches Small-business networking made simple The family offers a full range of hubs and switches for small offices. Key Benefits Easy to install and use. Offers plug-and-play simplicity. All hubs ship with Network Assistant CD-ROM, a graphical step-by-step network setup, troubleshooting, and expansion guide. Simple troubleshooting. Diagnostic and Alert LEDs on the front panel and Network Assistant CD-ROM provide excellent support. Compact design. Unique form factor and small size saves valuable space in small offices. Lifetime limited warranty. Guarantees hubs and switches, including the power adapter, for life. Free telephone support. 3Com offers assistance with installation, configuration, and troubleshooting. Year 2000 compliant. All hubs and switches are ready for the year 2000 conversion. Part of the award-winning family. As business requirements change, add other functions such as high-speed networking, Internet access, remote access, or print-sharing capabilities. Specifically designed for small businesses and offices, hubs and switches provide costconscious businesses with the foundation of an integrated system of small-office networking. By installing a local area network (LAN), users can work more effectively with file and print sharing and reduce costs by sharing expensive resources such as printers. 3Com hubs provide connectivity for every business need. They are available in a variety of port densities, from 4 to 16 ports, and stack up to four units high. For the valueconscious user, standard Ethernet hubs are ideal, while Fast Ethernet hubs and switches provide additional speed for high-volume transactions. The range features the latest 10/100 Mbps autosensing technology, allowing users to migrate to higher speeds when needed. In addition to the simple LEDs, compact design, and a variety of other great features, hubs and switches now ship with the Network Assistant CD-ROM, a graphical step-by-step guide to system-level network setup and operation. 3Com hubs and switches are a core part of the family, providing small businesses with the power to share information, connect remote offices, and access the Internet. Delivering the advantages of networking to small businesses, the market-leading system can help small businesses streamline their operations, effectively manage costly resources, and increase communication within and between offices. s and Switches Unmanaged and managed Ethernet and Fast Ethernet hubs and switches

2 s and Switches 3Com leverages the enterprise network expertise for the design of the family of hubs and switches. Compact, easy to install, and affordable, they come with a range of features and functionalities designed to meet the needs of small offices and growing businesses. Ideal for any small network. hubs and switches come with a full range of port densities, media interface options, and speeds to suit the needs of small-office networks. Unique ease-of-use features. Network Assistant, a highly graphical CD-ROM, is now shipping with many products, including hubs, switches, and networking kits, to support system-level network setup, and operation. Simple troubleshooting. Full suite of diagnostic LEDs, including Alert LED, port status, and network utilization for at-a-glance monitoring plus system-level troubleshooting guide on Network Assistant CD-ROM. Fully compatible with leading systems. units support Novell NetWare, Microsoft Windows 95 and 98, Windows NT, and other leading software systems, giving the widest range of backward compatibility with existing office software. Compact, clippable, and expandable. With a new, one-piece clipping system, up to four units can be connected in a stack. MDI/MDIX switch allows connection to a workstation or another network device using off-the-shelf, straight-through cables. Lifetime limited warranty. Guarantees the hubs and switches for life, including the power supply. Free telephone support. 3Com offers assistance with installation, configuration, and troubleshooting. Network Assistant The Network Assistant CD-ROM provides a step-by-step guide to all aspects of network setup and operation, allowing small businesses to enjoy the many benefits of networking. Included with most products, the Network Assistant CD-ROM takes the user through networking concepts and terms; network setup, including setting up file sharing, printer sharing, and Internet access; and also helps troubleshoot the network at a system level. The Network Assistant CD-ROM is an invaluable resource that lets both the novice networker and the more experienced user reap the benefits of networking. Clear graphical interface Family The 3Com family is an integrated networking system, allowing small businesses to share computer resources, access the Internet, and connect remote locations or users. products include: LAN Connectivity Network interface cards s and switches Networking kits HP JetDirect print server Remote Access and Internet Connectivity Modems LAN Modems Routers Internet firewalls The family offers a simple, reliable, and affordable solution for today s information-sharing needs. 2

3 Technology Explained Ethernet Since its inception, Ethernet has become the most popular topology in local area networks. Based on the IEEE standard, Ethernet has evolved over the years and now supports a range of media and significant enhancements that the original standard never did. The 10 Mbps available bandwidth can be either shared across a number of users using hubs or dedicated to workstations using switched technology. Fast Ethernet Fast Ethernet was designed to deliver higher levels of performance to bandwidth-intensive resources such as servers and high-performance users. Fast Ethernet is based on the Ethernet standard yet runs at 10 times the speed (100 Mbps). It is now one of the most popular high-speed technologies because of its cost effectiveness, stability, and compatibility with existing Ethernet LAN environments. Fast Ethernet switching allows dedicated performance between two devices. 10/100 Mbps Ethernet/ Fast Ethernet This combines both conventional 10BASE-T and high-speed 100BASE- TX support in one device. The unit automatically senses the speed of the connected end device (either 10 Mbps or 100 Mbps) and channels the data through at the appropriate speed. It is one of the most economical and flexible ways to add bandwidth immediately to congestion areas, while maintaining the option for migrations to higher bandwidth in the future. s and Switches Features Explained 10/100 autosensing ports Allows users to connect either 10 Mbps or 100 Mbps to the switch or hub. The device will automatically sense the speed of the device thereby optimizing network performance and user flexibility. Full duplex (switches only) LED indicators Network utilization meter Network Assistant CD-ROM Class II Fast Ethernet repeater FCC Class B certification MDI/MDI-X push-button switch External power supply Telephone support and limited lifetime warranty (including power adapter) LED Indicators Alert LED (orange) Alerts you to excessive network use or an isolated (partitioned) 10BASE-T port and 100BASE-TX port. Power LED (green) Indicates that the power supply to the unit is present. Alert Power Collision Collision LED (yellow) Flashes each time a collision is detected on the network. Collisions are part of normal network operation. Port Status Automatically doubles the throughput (to 20 Mbps or 200 Mbps) when ports are connected to other full-duplex devices or ports. Maximum potential throughput is 400 Mbps. Provides information on the status of the network. Indicates how much of the network bandwidth is in use. These LEDs are continually updated indicating when the network may need more bandwidth. Provides support on networking concepts, network setup, and operation. Provides ability to cascade two Fast Ethernet hubs together Indicates certified for use in domestic as well as office environments. (More stringent classification than Class A) Enables direct connection to a server, end station, or another switch or hub, using regular straight-through cables. Provides more flexibility and reduces power requirements in the product, reducing the need for a noisy fan. Provides peace of mind. Port Status LEDs (green/yellow) Indicate the status of each port. If green, the link between the port and the next piece of network equipment is functional. If nothing is connected, the LED will be off. If yellow, the port has partitioned due to a fault on that segment. The coaxial port LED (where applicable) can only be yellow or off. It will be yellow if the port has partitioned or when the port is not terminated. Network Utilization % 2% 3% 6% 12% 25% 50% 80% Green = OK, Yellow = Partitioned 8 Network Utilization LEDs (green/yellow/ orange) Indicate how much your network is being used. As this front view of the Fast Ethernet 8 illustrates, each unit offers a variety of LED indicators, including an Alert LED to allow quick monitoring of hub and network activity. The Alert LED gives users immediate notification of problems, such as excessive network use, without requiring special technical knowledge. H u b s a n d S w i t c h e s 3

4 s Fast Ethernet s The family of Fast Ethernet hubs provides full 100 Mbps performance and is designed for small businesses that want more performance from their network. This family of hubs delivers quick exchange of data between PCs and swift downloading from the network. The Dual Speed hubs, with 10/100 autosensing technology provide the flexibility to connect devices at either speed automatically assigning power where possible and offering a smooth transition from 10 Mbps to 100 Mbps. Each hub features plug-and-play installation and requires no configuration. Plus, all hubs have an easy-to-read, front-panel display that includes diagnostic LEDs and network monitoring. All hubs are backed by 3Com s lifetime limited warranty and telephone support policy. The Network Assistant CD-ROM is included Dual Speed 8 free with every hub, providing assistance with system-level network setup and operation. Fast Ethernet s 100BASE-TX 10/100 Mbps autosensing Ethernet/Fast Ethernet ports Network utilization (LED) Class II Fast Ethernet repeater LED indicators MDI-MDIX port Telephone support and limited lifetime warranty Network Assistant CD-ROM FCC Class B 4 (3C16723A) 4 The lowest cost choice for Fast Ethernet connectivity. 8 (3C16722A) 8 Provides affordable Fast Ethernet desktop performance. 12 (3C16721A) 12 Provides affordable Fast Ethernet desktop performance for expanded networks. Dual Speed 8 (3C16750A) 8 A popular hub combining Fast Ethernet performance and with the flexibility to expand an existing Ethernet network to Fast Ethernet. Dual Speed 16 (3C16751A) 16 Ideal for Fast Ethernet connectivity with the flexibility to expand an existing Ethernet network to Fast Ethernet. External power supply Fast Ethernet s (100 Mbps) Configuration Rules All hubs are Class II. You can directly connect two Class II Fast Ethernet hubs (Class I hubs cannot be directly connected to other Fast Ethernet hubs). The total length of cable (A+B+C below) between two workstations and a nonrepeater piece of equipment (such as a switch) must not exceed 205 m (672 ft). Each cable (A, B, or C) must not exceed 100 m (328 ft). 3Com recommends that Category 5 cables be used and that the cable (B) between the Fast Ethernet hubs is not longer than 5 m (16.4 ft). This allows the maximum hub-to-workstation cable length (A or C) of 100 m (328 ft) to be used, as shown in the example. Switch Workstation A B C Workstation Example: Workstation Dual Speed m (328 ft) 100 Mbps link 5 m (16.4 ft) 100 Mbps 100 m (328 ft) Workstation These rules do not apply to Fast Ethernet switches. You can connect as many switches together as your business requires. 4

5 Switches Switches The family of Fast Ethernet switches is designed for small businesses that want the highest network performance possible to exchange large data files and images, and access real-time information. switches allow dedicated, high-speed connections at either 10BASE-T or Dual Speed Switch BASE-TX, making them ideal for connecting servers or multiple hubs in small businesses and providing a flexible migration path. They provide expandable connections for 4, 8, or 16 users or networked devices.the Network Assistant CD-ROM is included free with every switch, providing assistance with system-level network setup and operation. or Switch? With a hub, all users share the same bandwidth. This works well with a few users, but as you add users, competition for bandwidth can start to slow down traffic on the LAN. Switches are more appropriate when you need greater network performance or a high-speed server uplink, such as if Fast Ethernet Switches Dual Speed Switch 4 (3C16733A) 4 All 4 A low port density, high-performance, Fast Ethernet switch ideal for boosting network performance with multiple hub aggregation or server connection. Dual Speed Switch 8 (3C16734A) 8 All 8 A popular switch ideal for connecting servers, multiple hubs, or desktops for small businesses that use bandwidth-intensive applications. Dual Speed Switch 16 (3C16735A) 16 All 16 Provides high-performance switching for bandwidth-intensive applications. Small Business Networking Kit Networking Kit The PCI networking kit provides complete network hardware for connecting personal computers or peripherals, offering a reliable and affordable way to build a network. You ll find it ideal for small businesses and small offices that need reliable, affordable networking solutions. This complete, network-in-abox solution contains everything needed to create a network. The networking kit contains one 4, two 10/100 NICs, two 25-foot UTP cables, an external power supply, user guide, and complete installation software. The networking kit is easy to install with the Network Assistant CD-ROM included free with every networking kit. you need to connect users to a few hubs or servers, or if you have to connect many power users together. A switch improves performance and shortens network response times by reducing the number of users per segment. A switch does this by providing dedicated bandwidth to every device server, PC, or hub connected to one of its ports. Autonegotiating full- and half-duplex ports 10/100 Mbps autosensing Ethernet/Fast Ethernet ports LED indicators Network utilization (LED) MDI-MDIX port Telephone support and limited lifetime warranty Network Assistant CD-ROM Available in multilingual versions: 3CSOHOKIT100A Networking Kit (U.S.) 3C1905B-FR Networking Kit (France) 3C1905B-EU Networking Kit (Rest of Europe)) FCC Class B External power supply H u b s a n d S w i t c h e s 5

6 Ethernet s Ethernet s The family of Ethernet hubs is specifically designed for small businesses with basic network requirements, such as file or peripheral sharing, or for those who simply want to add additional users to a 10BASE-T network. Ethernet hubs offer compatibility with legacy coax or thick Ethernet networks and provide connections for 4, 8, or 16 users or networked devices. The Network Assistant CD-ROM is included free with every switch, providing assistance with system-level network setup and operation. Ethernet 8 Ethernet s 10BASE-T RJ-45 10BASE-T coax 10BASE-T AUI LED indicators Network utilization (LED) MDI-MDIX port Telephone support and limited lifetime warranty Network Assistant CD-ROM FCC Class B External power supply Ethernet 4 (3C16704A) 4 A low-cost, entry-level hub, providing basic Ethernet connectivity. Ethernet 4C (3C16703A) Ideal for entry-level networks requiring alternative media connectivity. Ethernet 8 (3C16700A) 8 A popular entry-level hub providing basic Ethernet connectivity. Ethernet 8C (3C16701A) 8 1 Ideal hub for businesses wanting to expand their existing coaxial network. Ethernet 16C (3C16702A) 16 1 Provides expanded network capacity and connectivity to legacy coaxial networks. Ethernet 8/TPM (3C16710) 8 1 For networks requiring SNMP management capabilities. Ethernet (10 Mbps) Configuration Rules Using twisted-pair cables, you can connect a maximum of four Ethernet (10 Mbps) hubs in series between workstations, or between a workstation and a nonrepeater piece of equipment (such as a switch). Each cable must not exceed 100 m (328 ft). An example is shown. Example: Switch Workstation 10 Mbps Dual Speed 8 10 Mbps 10 Mbps link 10 Mbps Workstation 6

7 Specifications s and Switches s All hubs come with a user guide, power adapter, one-piece clipping system, and rubber feet. Ethernet s Ethernet 4 (10BASE-T ) 3C16704A Connectors: Four RJ-45 ports for 10BASE-T twisted-pair Weight: 500 g (1.1 lb) Ethernet 4C (10BASE-T ) 3C16703A Connectors: Four RJ-45 ports for 10BASE-T twisted-pair; one BNC port; one AUI port Weight: 500 g (1.1 lb) Ethernet 8 (10BASE-T ) 3C16700A Connectors: Eight RJ-45 ports for 10BASE-T twisted-pair Weight: 500 g (1.1 lb) Ethernet 8C (10BASE-T ) 3C16701A Connectors: Eight RJ-45 ports for 10BASE-T twisted-pair; one BNC port for 10BASE2 thin Ethernet (50 ohm) in); Depth: mm (5.3 in) mm (0.6 in) for coaxial port; Weight: 550 g (1.2 lb) Ethernet 16C (10BASE-T ) 3C16702A Connectors: Sixteen RJ-45 ports for 10BASE-T twisted-pair; one BNC port for 10BASE2 thin Ethernet (50 ohm) 8/TPM (Managed 10BASE-T ) 3C16710 Connectors: Eight RJ-45 ports for 10BASE-T twisted-pair (Port 8 is switchable, allowing connection of multiple units using 10BASE-T cable); one BNC port for 10BASE2 thin Ethernet (50 ohm); one DB-9 serial connection for management (8.7 in); Height: 54.6 mm (2.1 in); Depth: mm (7.3 in) mm (0.6 in) for coaxial port; Power: 18 VA ; BABT Approval (For U.K. users only) The 8/TPM is covered by Oftel General Approval, NS/G/12345/J/100003, for indirect connection to a public telecommunications system. This can be achieved using the serial port and an approved modem. Requirements for Transcend Quick Configuration Manager An IBM-compatible PC with at least an Intel 486/33 processor, as well as Microsoft Windows 95, Windows 3.1, or Windows for Workgroups; MS-DOS 5.0 or later; a minimum of 4 MB available hard disk space; a minimum of 8 MB RAM; a 3.5 in disk drive; VGA or SVGA color monitor; a mouse; and a null modem (serial) cable. Fast Ethernet s 4 (100BASE-TX ) 3C16723A Connectors: Four RJ-45 ports for 100BASE-TX twisted-pair Weight: 500 g (1.1 lb) Power: 18 VA General 100BASE-TX cable must be data grade Category 5, either shielded or unshielded to ensure optimum performance. You should ensure that you have Fast Ethernet-compatible NICs installed in each PC. IEEE EMC; EN Class B*; EN ; FCC Part 15 Class B Verified; C108.8 Class B; VCCI Class 2 8 (100BASE-TX ) 3C16722A Connectors: Eight RJ-45 ports for 100BASE-TX twisted pair Weight: 550 g (1.21 lb) Power: 18 VA General 100BASE-TX cable must be data grade Category 5, either shielded or unshielded to ensure optimum performance. You should ensure that you have Fast Ethernet-compatible NICs installed in each PC. IEEE EMC; EN Class B*; EN ; FCC Part 15 Class B Verified; C108.8 Class B; VCCI Class 2 12 (100BASE-TX ) 3C16721A Connectors: Twelve RJ-45 ports for 100BASE-TX twisted-pair Power: 18 VA General 100BASE-TX cable must be data grade Category 5, either shielded or unshielded to ensure optimum performance. You should ensure that you have Fast Ethernet compatible-nics installed in each PC. IEEE EMC; EN Class B*; EN ; FCC Part 15 Class B Verified; C108.8 Class B VCCI Class 2 Dual Speed 8 (10/100BASE-TX ) 3C16750A Connectors: Eight 10/100BASE- TX RJ-45 ports (8.7 in); Height 54.6 mm (2.1 in); Power: 33 VA IEEE 802.3; EMC; EN Class B; EN ; FCC Part 15 Class B; CSA C108.8 Class B; VCCI Class 2; AS/NZS 3548 Class B CSA 22.2 #950 Dual Speed 16 (10/100BASE-TX ) 3C16751A Connectors: Sixteen 10/100BASE-TX RJ-45 ports (8.7 in); Height 54.6 mm (2.1 in); Weight: 1000 g (2.2 lb) Power: 53 VA IEEE 802.3; EMC; EN Class B; EN ; FCC Part 15 Class B; CSA C108.8 Class B; VCCI Class 2; AS/NZS 3548 Class B CSA 22.2 #950 H u b s a n d S w i t c h e s 7

8 s and Switches Specifications Fast Ethernet Switches All switches come with a user guide, power adapter, one-piece clipping system, and rubber feet. Dual Speed Switch 4 (10/100BASE-TX autosensing ports) 3C16733A Connectors: Four 10/100BASE- TX RJ-45 ports (MDI/MDIX selectable) Power: 20 VA IEEE 802.3; EMC; EN Class B*; EN ; FCC Part 15 Class B; ICES-003 Class B; CSA C108.8 Class B; VCCI Class B; AS/NZS 3548 Class B * Screened (shielded) cables must be used to ensure compliance with these standards. CSA 22.2 #950; IEC 950 Dual Speed Switch 8 (10/100BASE-TX autosensing ports) 3C16734A Connectors: Eight 10/ 100BASE-TX; RJ-45 ports (MDI/MDIX selectable on port 8) Depth: mm (7.3 in) Weight: 900 g (2 lb) Power: 16.6 VA IEEE 802.3; EMC; EN Class B*; EN ; FCC Part 15 Class B; ICES-003 Class B; CSA C108.8 Class B; VCCI Class B, AS/NZS 3548 Class B *Screened (shielded) cables must be used to ensure compliance with these standards. CSA 22.2 #950 Dual Speed Switch 16 (10/100BASE-TX autosensing ports) 3C16735A Connectors: Sixteen 10/100BASE-TX; RJ-45 ports (MDI/MDIX selectable on port 16) Depth: mm (7.3 in) Weight: 1000 g (2.2 lb) Power: 34.5 VA IEEE 802.3; EMC; EN Class B*; EN ; FCC Part 15 Class B; ICES-003 Class B; CSA C108.8 Class B; VCCI Class B, AS/NZS 3548 Class B *Screened (shielded) cables must be used to ensure compliance with these standards. CSA 22.2 #950 Warranty Summary All hubs and switches are covered by a lifetime warranty; the power adapter is also included in this warranty. To qualify for the warranty, you must submit a registration card. Advance hardware exchange is available during the first year; thereafter, return the hub to 3Com for repair. The lifetime warranty is not offered where restricted or prohibited by law. All hubs and switches are covered by 90-day telephone support. For more product information, please refer to the following publications: NIC data sheet /100 LAN PC Card data sheet HPJetDirect 300X Print Server data sheet ISDN LAN Modem data sheet K LAN Modem* data sheet K Business Modem data sheet Networking Kit data sheet Remote 511 and 531 Access Routers data sheet HP JetDirect 170X External Print Server data sheet *Available in North America only. 3Com Corporation P.O. Box Bayfront Plaza Santa Clara, CA Phone: NET 3Com or Fax: World Wide Web: To learn more about 3Com products and services, visit our World Wide Web site at 3Com Corporation is publicly traded on Nasdaq under the symbol COMS. Copyright Com Corporation. All rights reserved. 3Com, the 3Com logo, and are registered trademarks of 3Com Corporation. More connected. is a trademark of 3Com Corporation. NetWare is a trademark of Novell. Windows and Windows NT are trademarks of Microsoft. Other product and brand names may be trademarks or registered trademarks of their respective owners. All specifications are subject to change without notice. Printed in the U.S.A. on recycled paper /99