Cisco SFP+ modules offer the following features and benefits. - Industry’s smallest 10G form factor for greatest density per chassis - Hot-swappable input/output device that plugs into an Ethernet SFP+ port of a Cisco switch (no need to power down if installing or replacing) - Supports “pay-as-you-populate” model for investment protection and ease of technology migration - Digital optical monitoring capability for strong diagnostic capabilities - Optical interoperability with 10GBASE XENPAK, 10GBASE X2, and 10GBASE XFP interfaces on the same link - Cisco quality identification (ID) feature enables a Cisco platform to identify whether the module is certified and tested by Cisco