Cisco CP-7921G-P-K9 SFP+ Transceiver:

• Model: Cisco CP-7921G-P-K9
   
• Network Technology: 10Gbps
• Media Type Supported: Single-mode Fiber
• Connector Type: LC
• Wavelength: 1310nm
• Maximum Distance: 10 kilometers
• Operating Temperature: 32 to 104 degrees Fahrenheit (0 to 40 degrees Celsius)
• Form Factor: Hot-swappable
• P: P stands for Power over Ethernet, which means that the Cisco CP-7921G-P-K9 can be powered over the same fiber optic cable that it is used to transmit data.

The Cisco CP-7921G-P-K9 is a 10GBASE-LR SFP+ Transceiver with Power over Ethernet that can be used to connect two devices over fiber optic cable. It has a maximum distance of 10 kilometers, which means that it can be used to connect devices that are located over a long distance from each other.

Here are some of the features of the Cisco CP-7921G-P-K9:

• 10Gbps: The Cisco CP-7921G-P-K9 can support data transmission speeds of up to 10Gbps.
• Single-mode Fiber: The Cisco CP-7921G-P-K9 can be used with single-mode fiber optic cable, which is a type of fiber optic cable that is designed for long-distance transmission.
• LC Connector: The Cisco CP-7921G-P-K9 uses an LC connector, which is a standard type of connector used for fiber optic cables.
• Hot-swappable: The Cisco CP-7921G-P-K9 is hot-swappable, which means that it can be replaced without interrupting network traffic.
• P: P stands for Power over Ethernet, which means that the Cisco CP-7921G-P-K9 can be powered over the same fiber optic cable that it is used to transmit data.

The Cisco CP-7921G-P-K9 is a reliable and high-performance SFP+ transceiver with Power over Ethernet that is a good choice for applications that require high-speed data transmission over long distances and need to be powered over the same cable.