What are the differences between SFP, SFP+, QSFP and QSFP+?

What is an SFP port? A networking device's SFP port is a small slot that accommodates an SFP module insert Most contemporary networking

The additional mini-GBIC slots supports SFP auto-detection and dual speed as it features 100BASE-FX and 1000BASE-SXLX SFP fiber-optic modules, meaning the

sfp slot meaning SFP ports enable Gigabit switches to connect to a wide variety of fiber and Ethernet cables in order to extend switching functionality

sfp slot switch FX and 1000Base-SXLX SFP fiber-optic modules, meaning the administrator now can flexibly choose the suitable SFP transceiver