The model H08-15530-EF is an internal modem for PCI slots. It is Windows Hardware Qualification Labs (WHQL) approved. The "F" designation in the model number indicates the product is compliant with Restriction on Hazardous Substance (RoHS) regulations and can be used on systems shipped into the EU. This modem is fully compatible with V.92/V.44 international standards and will also communicate at V.90 and slower speeds. The Model H08-15530-EF supports V.44/V.42bis/MNP5 data compression and V.42/MNP2-4 error correction, as well as send/receive fax operations. The modem supports remote telephone answering machine (TAM) applications. V.80 Synchronous Access Mode between the modem and the host/DTE is provided for host-controlled communications protocols such as H.324 videoconferencing applications. The modem has advanced lightning protection. The Model H08-15530-EF is a host based modem, using the Central Processing Unit (CPU) of the computer in which the modem is installed to perform controller and data pump functions. 3036DH