40G QSFP+ optical module refers to 40G optical module in QSFP+ package form, CFP and QSFP are its main package forms for backbone network transmission. Although both 40G QSFP+ optical modules and 40G CFP optical modules can be used in 40G networks, 40G QSFP+ optical modules are a more commonly used and popular type of 40G optical modules.

Here are the comprehensive lists of 40G QSFP+ optical module models from Cisco, Huawei, and H3C:

Cisco 40G QSFP+ Optical Module Models

Huawei 40G QSFP+ Optical Module Models

H3C 40G QSFP+ Optical Module Models

Additional Learning Hub Resources 

200G QSFP56 Optical Module Overview 

Cisco 400G QSFP-DD Optical Transceivers Overview 

800G OSFP Optical Transceiver Module Overview 

What are the common sfp optical modules 

How to Solve Optical Module Compatibility Problems