3Com 3C16951 SuperStack II Switch 1100 12-Port 10Base-T RJ45, 2-Port 10/100Base

The 3Com 3C16951 SuperStack II Switch 1100 is a Layer 2 Ethernet switch delivering 12 × 10Base-T RJ45 ports plus 2 × 10/100Base-TX autosensing ports for small office and lab network deployments. This unmanaged, plug-and-play architecture eliminates configuration overhead while supporting stacking of up to four units via matrix port connectivity, enabling scalable network expansion. A single expansion slot accommodates future module additions, and dedicated LED indicators provide real-time port status, collision/activity, and power monitoring.

The switch operates across 80 to 264 VAC RMS at 40 to 63 Hz line frequency, consuming approximately 38 W, and mounts in standard 19" racks at 2 HU form factor.

Technical Specifications

• Switching Architecture: Layer 2 Ethernet


• Port Count: 12 × 10Base-T RJ45; 2 × 10/100Base-TX RJ45


• Stacking: Up to four units interconnected via matrix port; requires 3C16965 matrix cable or 3C16960 matrix module


• Expansion: 1 × module slot with transceiver support


• Management: Unmanaged, plug-and-play; RS232 console port; USB port


• Power Input: IEC 320 inlet; 80–264 VAC RMS, 40–63 Hz; ~38 W consumption; 5 A fuse protection; redundant power socket available


• Physical: 440 mm (17.3 in) W × 44 mm (1.7 in) H × 168 mm (6.6 in) D; 2.1 kg (4.6 lb)

Key Features

• IEEE 802.3 (10Base-T), IEEE 802.3u (100Base-TX), and IEEE 802.1D (Bridging) compliance


• Per-port partition and link-status LEDs; segment collision/activity indicators; unit power and management status LEDs


• Supports Category 3, 4, or 5 UTP/STP cabling for 10Base-T; Category 5 for 100Base-TX


• Maximum segment length: 100 m (328 ft)


• RoHS and WEEE compliant

Typical Applications Small office networks, lab environments, departmental workgroups, and distributed branch offices requiring low-cost Ethernet connectivity without managed switching complexity.

Compatibility & Integration Fully compatible with standard Ethernet and Fast Ethernet infrastructure. Matrix stacking enables seamless multi-unit deployment. Uplink port supports extended network reach. Optional expansion modules extend functionality within the single expansion slot.