| Single-mode | SM
|
| Multi-mode | MM |
| Physical Contact | PL |
| Ultra Polish Physical Contact | UPL |
| Angled Polish Physical Contact | APL |
| Subscriber Connector | SC |
| Lucent Connector | LC |
| Straight Tip Connector | ST |
| Ferrule Connector | FC |
| Mechanical Transfer Registered jack | MT-RJ |
| Mechanical Pull-Off | MPO |
| Mechanical Transfer Pull-Off | MTP |
| Fiber Distributed Data Interface | FDDI |
| Enterprise System Connection | ESCON |
| High-Speed Serial Data Connector | HSSDC |
| InfiniBand | IB |
| InfiniBand 4X | IB4X
|
| Small Form-Factor Pluggable | SFP |
| Quad SFP | QSFP |
| Unshielded Twisted Pair | UTP |
| Mode-Field Diameter | MFD |