CHAPTER 2: Introduction

2.4 The Rear Panel

All cable connections are made at the rear panel of the ServSwitch, as illustrated in Figures 2-4 and 2-5 and described below.

CPU3

CPU4

 

 

 

 

 

POWER

CPU1

CPU2

MONITOR/KEYBOARD/MOUSE

17VAC CT

RS-232

Figure 2-4. The rear panel of a 2 to 1 ServSwitch (SW721A-R4).

 

CPU 15

CPU 16

CPU 13

CPU 14

 

 

 

CPU 11

CPU 12

CPU 9

CPU 10

 

 

POWER

CPU 7

CPU 8

CPU 5

CPU 6

 

 

 

 

 

 

CPU 3

CPU 4

CPU 1

CPU 2

MONITOR/KEYBOARD/MOUSE

RS-232

Figure 2-5. The rear panel of a 16 to 1 ServSwitch (SW725A-R4).

Panel Label

Conn. Description

CPU N

DB25 F Connect your computers to these ports with “CPU

[N = a number

Adapter Cables.” At the ServSwitch end these cables

from 1 to

have a DB25 male connector; at the other ends, they

either 2, 4, 8,

have appropriate connectors to plug into your CPUs’

12, or 16,

video, keyboard, and mouse ports. These cables take

depending on

the signals that would normally pass between the

which model

CPUs’ ports and the monitor, keyboard, and mouse,

you have]

and carry them between the CPUs’ ports and the

 

Switch instead.

 

You could also connect “submaster” Serv type

 

switches to these ports using “ServSwitch-to-

 

ServSwitch Expansion Cables.” These cables have

 

DB25 male connectors at both ends; at the submaster

 

end, they should be plugged into a MONITOR/

 

KEYBOARD/MOUSE port. Refer to Sections 2.5 and

 

3.2.4.

17

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Black Box SW723A-R4, SW722A-R4, KV3108SA-R4, SW721A-R4, SW724A-R4, SW725A-R4 manual Rear Panel, Cpu N

SW725A-R4, SW722A-R4, SW723A-R4, KV3108SA-R4, SW724A-R4 specifications

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The SW721A-R4 and SW724A-R4 are primarily layer 2 switches that support essential networking protocols such as IEEE 802.1Q for VLAN tagging, ensuring secure and efficient traffic management. With robust forwarding capabilities, these switches boast high-speed Gigabit Ethernet ports, which enable seamless data transfer and reduce latency in data-driven applications. Their fanless design also ensures quiet operation, making them ideal for office settings and noise-sensitive areas.

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