| Specification | |
| Hardware | |
| I/O controller | 4x 16C550C or compatible, each with 16 bytes Tx/Rx FIFO |
| Connector type | Male DB9 |
| Interface | |
| Bus interface | PCI version 2.1 (32bit) |
| Serial interface | RS232, RS422 / 485 |
| No. of ports | 4 |
| Signals | RS232 TxD, RxD, RTS, CTS, DTR, DSR, DCD, GNDRS422 TxD+/-, RxD+/-, RTS+/-, CTS+/-, GNDRS485 Data+/-, GND |
| RS485 data control | Auto (Automatic Data Direction Control) or by RTS |
| Built-in termination resistor | RS485 120 Ohm, jumper enable / disable |
| Performance | |
| Speed | 50 - 921.6Kbps |
| Max. no. of ports | 16 (4 boards) |
| Configuration | |
| Parity | None, even, odd, space, mark |
| Data bits | 5, 6, 7, 8 |
| Stop bits | 1, 1.5, 2 |
| IRQ | Assigned by BIOS |
| I/O address | Assigned by BIOS |
| Power and Environment | |
| Power requirement | 720mA max.(+5V), 43mA(+12V), 31mA(-12V) |
| Operation temp. | 0°C - 55°C |
| Dimension | 135mm x 110mm |
| Isolation Protection | 2KV |
| Surge Protection | 25kV ESD |
| Operating Systems supported | Vista, XP, Windows 2000, Windows NT, Windows 95/98/ME, DOS |
