## Optical Module Type Comparison

| Type | Speed | Interface | Typical Application |
|------|------|----------|-------------------|
| SFP+ | 10Gbps | LC | 10G access |
| SFP28 | 25Gbps | LC | 25G access |
| QSFP+ | 4×10Gbps | LC/MPO | 40G aggregation |
| QSFP28 | 4×25Gbps | LC/MPO | 100G access |

## Selection Key Points

### Transmission Distance

- 0-300m: Multimode optical modules (850nm) + OM3/OM4 fiber
- 300m-10km: Single-mode optical modules (1310nm) + OS2 fiber
- 10km+: Single-mode optical modules (1550nm) + OS2 fiber

### Compatibility

EZMAX optical modules are fully compatible with mainstream brand equipment including Huawei, H3C, Ruijie, Cisco, and Juniper.