| Sl. | Scenario | Description | Solution 1 | Solution 2 | 
| No. | 
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 | solution | AD279A  | 
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 | (DB25 port | port module supports only | 
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 | module). | Male DB25  | 
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 | ports. | 
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| 
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 | As a result, the existing | 
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 | cables cannot be | 
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| 
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 | connected to the AD279A | 
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 | 64 port DB25  | 
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 | serial ports. | 
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| 2 | Replacing | The A6749A 64 port | Use a DB25 Male | 
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| 
 | an existing | solution’s port module | to Female gender | 
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| 
 | A6749A | supports Female DB25 RS- | changer to connect | 
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| 
 | 64- port | 232 serial ports. | the custom made | 
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| 
 | solution | The custom made cables | cables to AD278A | 
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| 
 | (DB25 port | for this solution include | 
 | |
| 
 | module) | Male DB25  | serial ports. | 
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| 
 | with an | connectors to connect to | 
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| 
 | AD278A 8- | the A6749A Female DB25 | 
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| 
 | port | 
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 | |
| 
 | solution. | However, the AD278A 8 | 
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| 
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 | port solution supports only | 
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| 
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 | Male DB25  | 
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| 
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 | ports. | 
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| 
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 | As a result, the existing | 
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| 
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 | cables cannot be | 
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| 
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 | connected to the AD278A | 
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| 
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 | 8 port DB25  | 
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| 
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 | ports. | 
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| 3 | Replacing | The A6749A 64 port | To connect the | Replace the DB25 | 
| 
 | an existing | solution’s port module | custom made | connector of the | 
| 
 | A6749A | supports DB25  | cable, use a | custom made cable | 
| 
 | 64- port | serial ports. | converter that | with the  | 
| 
 | solution | The custom made cables | supports  | plug. | 
| 
 | (DB25 port | for this solution include | 232 RJ45 plug at | 
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| 
 | module) | DB25  | the AD279A | To replace the DB25 | 
| 
 | with an | connect to A6749A DB25 | solution end and a | connector with a RJ45 | 
| 
 | AD279A | plug, detach wires | ||
| 
 | However, the AD279A 64 | Female connector | from the DB25 | |
| 
 | solution | port solution’s port module | at the other end. | connector in | 
| 
 | (RJ45 port | supports only RJ45 serial | 
 | sequential order as | 
| 
 | module). | ports. | While designing | listed in Table 11, | 
| 
 | 
 | As a result, the existing | the converter, | and connect the wires | 
| 
 | 
 | cables cannot be | ensure that you | to the RJ45 plug. | 
| 
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 | connected to the AD279A | follow the | 
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| 
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 | 64 port solution’s RJ45 RS- | specifications listed | 
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| 
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 | 232 serial ports. | in Table 11. | 
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