Fiber optic adapter, sometimes also called coupler, is a small device designed to terminate or link the fiber optic cables or fiber optic connectors between two fiber optic lines.

| Product Name | Unibody type OM3 DX-B LC/UPC fiber optic Adapter | |
| Color | As picture | |
| Meet the standards | IES/ROHS/SGS | |
| Insertion Loss (Typical) | dB | ≤0.2 |
| Return Loss | dB | ≥50 |
| Exchangeability | dB | ≤0.2 |
| Repeatability | dB | ≤0.2 |
| Durability | time | >1000 |
| Operating Temperature | °C | -40~75 |
| Storage Temperature | °C | -45~85 |