HP 5187-4317 Eton ET166 PCI Modem Card RJ11 56K Dial-Up Internal Modem Board

HP 5187-4317 Eton ET166 PCI Modem Card RJ11 56K Dial-Up Internal Modem Board

The HP 5187-4317 is an internal PCI modem card manufactured by Eton (model ET166) and sold under the HP brand. It provides 56K dial-up modem capability via a standard RJ11 phone-line port and installs into any full-size PCI slot. The board carries an Agere modem controller chipset, visible on the PCB, and an Allied CS1313 line-side transformer. Manufactured in Puerto Rico, the board is labeled revision REV:NA with sub-board identifier 90109-2.

Specifications & What's Included

• HP Part Number: 5187-4317
• Board Model: Eton ET166
• Sub-PCB ID: 90109-2, REV:NA
• Bus Interface: PCI
• Modem Type: 56K internal dial-up modem
• Phone Line Connector: RJ11 (on bracket)
• Main Controller: Agere modem controller (markings partially legible on board)
• Line Transformer: Allied CS1313
• Country of Manufacture: Puerto Rico
• Included: PCI modem card only — no driver disc or accessories

Applications

PCI internal modem cards like the HP 5187-4317 were standard equipment in desktop PCs throughout the late 1990s and early 2000s, the era when dial-up Internet access was the dominant form of home and small-office connectivity. They connect a PC to the public switched telephone network (PSTN) over a standard RJ11 phone line, enabling dial-up Internet at speeds up to 56 Kbps (V.90/V.92), fax transmission, and software-based telephony. Agere Systems (formerly Lucent Microelectronics) was one of the dominant modem chipset suppliers of that period, and boards using their silicon were widely bundled into HP, Compaq, and other OEM systems. Today these cards see use as replacement parts in legacy desktop systems, in point-of-sale terminals, industrial PCs, and embedded systems that still rely on PSTN dial-up for out-of-band management or data polling over analog phone lines.