| Type | Reference | Note | |
| LC | IEC 61754-20 | Single mode duplex | APC: Green connectors;UPC: Blue connectors |
| Multimode duplex | UPC: Grey Connector | ||
| MPO | IEC 61754-7 | Single mode duplex | APC: Black connectors APC: Black connectors |
| Multimode duplex | PC: Black Connectors | ||
| MTP | IEC 61754-7 | Single mode duplex | APC: Black connectors APC: Black connectors |
| Multimode duplex | PC: Black Connectors | ||
| SC | IEC 61754-4 | Single mode duplex | APC: Green connectors UPC: Blue connectors |
| Multimode duplex | UPC: Grey Connectors | ||
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