| Brand | Unbranded |
|---|---|
| Type | Fiber Optic Loopback Test Adapter |
| Connector B | LC/UPC |
| Connector A | LC/UPC |
| Fiber Type | Single-Mode |
Check the listing for details. LC/UPC Fiber Optic Singlemode Optical Loopback Cable Tester Adapter. Condition: New. Listed at 14.95 USD. For the testing applications, the loopback signal is used for diagnosing a problem.