| Features |
| 8 RS-232 or RS-422/485 ports |
| PCI or ISA bus available |
| Low repair rate with ASIC design |
| Speeds up to 921.6 Kbps |
| On-chip hardware flow control |
| Available with optical isolation and
surge protection as options |
| C168H/PCI |
PCI bus, 8 port smart serial board |
| C168H |
ISA bus, 8 port smart serial board |
| C168HS |
ISA bus, 8 port smart serial board with surge protection |