Vintage MSI PCI Express x1 internal analog dial-up modem card, model MS-3878.

This compact desktop expansion card is designed for a standard PCIe x1 slot and connects to a conventional analog telephone line through its single RJ-11 jack. It is suitable for retro and legacy PC projects, dial-up/BBS use, analog fax/data communication, industrial or point-of-sale systems that require a phone-line modem, or vintage computer-hardware collections.

Specifications:

Brand: MSI

Model / board marking: MS-3878

Label identification: PCIE Modem

Interface: PCI Express x1

Telephone connection: 1 × RJ-11

Use: Analog PSTN dial-up modem / possible data-fax capability

Regulatory marking: ANATEL 2264-07-4259

Manufacturing date shown: 2009-04-01

Bracket: Standard/full-height desktop PCIe bracket

Included: Card and attached bracket only, exactly as shown

Important: This is not an Ethernet network card, Wi-Fi adapter, DSL modem, cable modem, or broadband adapter. It requires a compatible computer, appropriate driver support, and a working analog telephone line. No telephone cable, drivers, manual, software disc, original packaging, or other accessories are included unless pictured.

Untested because a compatible test system and active analog telephone line were not available. Sold as-is for legacy computing, repair, parts, or collection.