Moxa C168H 8-Port RS-232 ISA Serial Communication Board
The Moxa C168H is an 8-port RS-232 ISA serial communication board designed to add multiple serial interfaces to legacy PCs and industrial computer systems. It provides eight independent RS-232 communication ports for connecting equipment such as terminals, modems, printers, data acquisition devices and other serial peripherals.
The C168H uses eight 16C550C-compatible communication controllers and supports serial communication speeds from 50 bps to 921.6 kbps. Its 16-byte FIFO and on-chip hardware flow control help provide reliable data transmission when multiple serial devices are operating simultaneously.
Technical Specifications
| Specification |
Details |
| Model |
C168H |
| Product Type |
8-Port RS-232 ISA Serial Board |
| Bus Interface |
16-bit ISA |
| Number of Ports |
8 |
| Serial Standard |
RS-232 |
| Communication Controller |
8 × 16C550C or compatible |
| FIFO |
16-byte |
| Baud Rate |
50 bps to 921.6 kbps |
| Data Bits |
5, 6, 7, 8 |
| Stop Bits |
1, 1.5, 2 |
| Parity |
None, Even, Odd, Space, Mark |
| RS-232 Signals |
TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND |
| Connector |
DB62 female |
| Maximum Boards per PC |
Up to 4 |
| Electrical Isolation |
500 V with optional Opt8F connector |
| Dimensions |
93 × 157 mm |
| Operating Temperature |
0°C to 55°C |
| Storage Temperature |
-20°C to 85°C |
| Relative Humidity |
5% to 95%, non-condensing |
| Warranty |
5 years |
Serial Connectivity for Legacy Industrial Systems
The C168H is designed for environments where a computer needs to communicate with multiple RS-232 devices simultaneously. Eight serial ports allow a single compatible PC to manage several terminals, modems, printers, measurement devices or other serial equipment without requiring separate serial expansion cards for each connection.
The board is particularly relevant to legacy industrial automation, data acquisition, machine control and serial communication systems that continue to use ISA-based computers. Its multi-port architecture provides a practical serial expansion solution for compatible legacy hardware.
Connection and Compatibility
The C168H uses a 16-bit ISA bus and provides its eight RS-232 ports through a DB62 female connector. Connection cables and breakout boxes are available for different serial connector configurations, including DB9 and DB25 options.
Because the C168H uses an ISA interface, compatibility with the host computer must be confirmed before purchase. It is intended for legacy systems with a suitable ISA expansion slot and should not be treated as a direct replacement for modern PCI, PCI Express or USB serial adapters.
Legacy Product Status
The Moxa C168H belongs to an older generation of multiport serial boards and is listed by Moxa among its phased-out products. Moxa's C168H/PCI variant has also been phased out and replaced by newer serial-board families. Therefore, the C168H is primarily relevant for legacy system maintenance, replacement and refurbishment projects where the original ISA hardware must be maintained.
Moxa C168H Price in Bangladesh
For the latest Moxa C168H price in Bangladesh, contact Datacom Technologies (BD). Pricing and availability may vary depending on sourcing, product condition, warranty and stock status, particularly because this is a legacy/phased-out product.
Contact: sales@datacom.com.bd
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