Key facts
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ATEN IC-422P/IC-424P/IC-428P User Manual
The ATEN IC-422P, IC-424P, and IC-428P are RS-422/485 serial PCI cards offering 2, 4, and 8 ports respectively. Each port includes bidirectional surge protection up to 1500 V or 600 W, 32 Bytes FIFO storage, and supports data rates up to 960 Kbps. The cards are plug‑and‑play and work with Windows 3.1/95/98/NT/2000/XP, DOS, and Linux operating systems.
Installation is straightforward: power off the computer, insert the card into an available PCI slot, connect the appropriate RJ‑45 to DB‑25/DB‑9 cables (for the 424P and 428P), attach peripheral devices, and power the system back on. The manual also provides pin assignments, compatibility information, and troubleshooting steps such as trying a different slot or cleaning contacts if boot errors occur.
ATEN IC428P specifications
| Ports (IC-422P) | 2 RS-422/485 ports |
|---|---|
| Ports (IC-424P) | 4 RS-422/485 ports |
| Ports (IC-428P) | 8 RS-422/485 ports |
| Surge Protection | up to 1500 V or 600 W |
| FIFO Storage | 32 Bytes |
| Maximum Speed | 960 Kbps |
| Plug and Play | Enabled |
| Supported Operating Systems | Windows 3.1/95/98/NT/2000/XP, DOS, Linux |
| PCB Layers | 2 Layer |
| Dimensions (IC-422P) | 120 × 70 mm |
| Dimensions (IC-428P) | 150 × 103 mm |
All ATEN IC428P documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
Which operating systems are supported by the ATEN serial PCI cards?
They support Windows 3.1, 95, 98, NT, 2000, XP, DOS, and Linux.
How many ports does the IC-424P provide?
The IC-424P provides four RS-422/485 ports.