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2. List of ProCurve products - Wikipedia

   en.wikipedia.org/wiki/List_of_ProCurve_products

   Additionally includes four 10GE ports (two CX-4 and two capable of housing optional 10GE optical transceivers). 20 or 44 Gb ports with 4 Dual Personality Ports (4 x Gbor SFPs) Supports up to four optional 10 Gigabit ports in CX4 and / or SFP+. Two versions support PoE and PoE+ [3] 20 or 44 Gb port switch, and 4 x Dual Personality Ports (2 x Gb ...

3. Power over Ethernet - Wikipedia

   en.wikipedia.org/wiki/Power_over_Ethernet

   The original PoE standard, IEEE 802.3af-2003, [1] now known as Type 1, provides up to 15.4 W of DC power (minimum 44 V DC and 350 mA) [2] [3] on each port. [4] Only 12.95 W is guaranteed to be available at the powered device as some power dissipates in the cable.

4. List of 3Com products - Wikipedia

   en.wikipedia.org/wiki/List_of_3Com_products

   Switch 4500 - Fast Ethernet. 26- and 50-port models. Two PoE models. Stackable, 24 or 48 10/100 ports plus 4 Dual Personality Ports (2 × Gb or SFPs). Supports Layer 2 switching and Layer 3 static routing, and RIP. Stackable up to 8-units high using Gigabit ports with distributed link aggregation, single IP address management.

5. Network switch - Wikipedia

   en.wikipedia.org/wiki/Network_switch

   Through port mirroring, a switch can create a mirror image of data that can go to an external device, such as intrusion detection systems and packet sniffers. A modern switch may implement power over Ethernet (PoE), which avoids the need for attached devices, such as a VoIP phone or wireless access point, to have a

6. Dell PowerConnect - Wikipedia

   en.wikipedia.org/wiki/Dell_PowerConnect

   All models also have one extension-module slot with either two QSFP 40 Gb ports, 4 SFP+ 10 Gb ports or 4 10GbaseT ports. It is a small (1U) switch with a high port density and can be used as distribution or (collapsed)core switch for campus networks and for use in the data center it offers features such as lossless Ethernet for iSCSI and FCoE ...

7. Power dividers and directional couplers - Wikipedia

   en.wikipedia.org/wiki/Power_dividers_and...

   Port 1 is the input port where power is applied. Port 3 is the coupled port where a portion of the power applied to port 1 appears. Port 2 is the transmitted port where the power from port 1 is outputted, less the portion that went to port 3. Directional couplers are frequently symmetrical so there also exists port 4, the isolated port.