Used to verify that a port is working. This one works with Norton Utilities: Norton Diagnostics from Symantec.
25 PIN D-SUB FEMALE to Computer
| Name | Pin | Pin | Pin | Pin |
|---|---|---|---|---|
| Jumpering 1 | 2 | 3 | ||
| Jumpering 2 | 4 | 5 | ||
| Jumpering 3 | 6 | 8 | 20 | 22 |
Norton 25 pin Serial Port Loopback
