This product is either discontinued or we cannot get that from suppliers.
Cisco XFP10GLR-192SR-L, Usage Data Networking, Optical Network, Interfaces/Ports 1 x LC/PC Duplex 10GBase-LR/LW Network, Optical Fiber, Single-mode, 10 Gigabit Ethernet, Hot-swappable, Compatibility Cisco Carrier Routing System.
The Cisco XFP Module offers customers a variety of 10 Gigabit Ethernet and Packet-over-SONET/ SDH (POS) connectivity options for data center, enterprise wiring closet, and service provider transport applications.