Cisco 39-0278-01 ADP OPTI Loopback Fiber Self-Test Testing Unit, ADP, OPTI, LC, • Type: ADP OPTI Loopback Module. ✅ Genuine Cisco Part | ✅ LC Connector | ✅ Ideal for Network Diagnostics. • Compatibility: Cisco and other LC-based fiber systems. • Connector: LC. byJuly 3, 2026
