3Com 3C17206 SuperStack 3 Switch 4400 SE 24-Port managed

3COM 3C17206-US SuperStack 3 Switch 4400 SE 24-Port. Fast Ethernet 10BASE-T / 100BASE-TX. Auto MDIX. 2 module slots; expandable to 192 ports. RJ-45. Full-rate nonblocking switching on all 10 / 100 Mbps ports; full / half-duplex auto-negotiation.
Features
User network login with IEEE 802.1X and RADIUS, combined with RADIUS Authenticated Device Access (RADA), based on MAC address,provide secure network access control at the network edge
Authenticated users can be automatically placed into a specific VLAN, restricting access only to the data needed
Secure Shell (SSH) encryption of login passwords, management VLANs, and management station "trusted IP address" lists help protect network from rogue management threats
LACP (IEEE 802.3ad) intelligently detects configuration duplicity and uses it to trunk up to 4Gb of bandwidth across a stack, while nullifying single points of failure from the network's edge infrastructure
Tolly tested wire-speed performance
Specifications
Ports:
24 10BASE-T/100BASE-TX configured as automatic MDIX; 2 module slots accommodating media modules or stacking modules; expandable to 192 ports.

Ports for supported modules vary by module: see the "Product Specifications" tab for each module for details
Media interfaces:
RJ-45

Interfaces for supported modules vary by module: see the "Product Specifications" tab for each module for details
Ethernet switching features:
Full-rate nonblocking switching on all 10/100 Mbps Ethernet ports; full-/half-duplex auto-negotiation and flow control; IEEE 802.1Q VLAN support; IEEE 802.1p traffic prioritization; IEEE 802.3ad Link Aggregation Control Protocol; IEEE 802.1X Radius Network Login; IEEE 802.3ah Ethernet in First Mile over Point to Point Fiber (EFMF)
Management:
Web interface management, command line interface management, SNMP management via 3Com Network Supervisor, and 3Com Network Administrator
Physical Dimensions:
Height: 4.4 cm (1.7 in)

Width: 44.0 cm (17.3 in)

Depth: 27.4 cm (10.8 in)