The vintage internal ISA Dial-Up Modem from the Accura 28.8 series is a unique piece of computer networking history. This modem, manufactured by Hayes, is a nostalgic reminder of the early days of dial-up internet access. With its vintage charm and specific model, it appeals to collectors and enthusiasts of vintage computing technology. Perfect for those looking to add a piece of history to their collection or for those looking to restore a retro computer setup, this Hayes modem is sure to be a conversation starter.
The Hayes Model 5617US is a vintage internal ISA Dial-Up Modem from the Accura 28.8 series. [1, 2]Key Technical Specs

• Speed: Operates at a maximum data transfer rate of 28.8 Kbps (using the V.34 protocol), which is slightly slower than the 33.6 Kbps models we discussed earlier.
• Special Feature: It natively supports DSVD (Digital Simultaneous Voice and Data). In the mid-to-late 1990s, this allowed users to talk on a telephone handset and transmit data over the exact same single analog phone line at the same time—a popular feature for early collaborative computing and legacy alarm/SCADA systems. [1, 2]
• Form Factor: Internal 16-bit ISA card architecture.
• sold as is no returns untested.