This Agere Systems HP P/N:5187-5216 D-11561 # / A1A KB5817 Fax Modem Card 56K is a high-quality modem card that is compatible with both universal and HP brands. It is designed to work with PCI ports and has a maximum data rate of 56 KBps. The modem card has a DSL/Phone (RJ-11) external interface and one port, making it a perfect choice for those who want to upgrade their computer's modem capabilities. In addition, this modem card is compatible with V.92 standards and is ideal for use in computers, tablets, and networking. It is easy to install and comes with a range of features that make it a reliable and efficient choice for all your modem needs.