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8, 24 or 48 10/100 ports including 1 or 2 Dual Personality Ports (1 or 2 x Gb or SFPs). 24 or 48 (10/100 with 2 Gb ports and 2 SFP ports (no Dual Personality) [2] 24 or 48 (PoE and non-PoE) with 2 SFP ports : 24 or 48 (PoE and non-PoE) with 4 SFP+ ports CPU ARM7TDMI @62.5 Mhz MIPS 32 @264/300 MHz Freescale PowerPC 8313 @266 MHz ARM9E @800 Mhz
The original IEEE 802.3af-2003 [1] PoE standard 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 assured to be available at the powered device as some power dissipates in the cable.
Stackable switches are customarily Ethernet, rack-mounted, managed switches of 1–2 rack unit (RU) in size, with a fixed set of data ports on the front. Some models have slots for optional slide-in modules to add ports or features to the base stackable unit. The most common configurations are 24-port and 48-port models.
An infrastructure node (a hub or a switch) accordingly uses a connector wiring called MDI-X, transmitting on pins 3 and 6 and receiving on pins 1 and 2. These ports are connected using a straight-through cable so each transmitter talks to the receiver on the other end of the cable.
IEEE 802.3 is a working group and a collection of standards defining the physical layer and data link layer's media access control (MAC) of wired Ethernet. The standards are produced by the working group of Institute of Electrical and Electronics Engineers (IEEE).
Code-switcher Joseph Sua'ali'i has recovered from injury to make Australia's team for the rugby test against Ireland, which handed 21-year-old flyhalf Sam Prendergast a second straight start and ...
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