2-Port Serial Card W-99100-2S

Reliable Dual Serial Expansion for PCI Express Systems

The W-99100-2S is a compact PCI Express x1 serial expansion card built around the MOSCHIP 99100 controller. Designed for computers and embedded platforms that need additional serial communication channels, it provides two serial ports through a single PCIe x1 interface. It is a practical choice for system integrators, equipment builders, maintenance teams, and industrial users upgrading modern computers while retaining communication with existing serial devices.

The card is fully compliant with the PCI Express Base 1.0a specification and uses a 100 MHz differential PCI Express common reference clock. Its black PCB design and compact 11.2 cm × 5.55 cm board size make it suitable for standard PC and industrial computer installations where dependable I/O expansion is required.

Key Features of the W-99100-2S

• MOSCHIP 99100 controller for PCI Express serial I/O expansion

• PCI Express x1 bus interface

• Two serial ports for simultaneous device communication

• Supports RS232, RS485, and RS422 operating modes

• Bidirectional serial speeds from 50 bps to 16 Mbps per port

• Full serial modem control

• Hardware and software flow control

• Supports 5-, 6-, 7-, 8-, and 9-bit serial formats

• Even, Odd, None, Space, and Mark parity options

• Custom baud-rate support through an external clock or internal PLL programming

• 256-byte transmit and receive FIFO on each serial port

• Remote wake-up and power-management support

• Serial-port transceiver shutdown support

• Slow IrDA support on serial ports

• 12-month warranty

W-99100-2S Technical Specifications

Specification	W-99100-2S
Controller Chip	MOSCHIP 99100
Bus Interface	PCI Express x1
Serial Ports	2
Serial Modes	RS232 / RS485 / RS422
Data Rate	50 bps to 16 Mbps per port
Flow Control	Hardware and Software
FIFO	256-byte TX/RX per serial port
PCB Color	Black
Product Length	11.2 cm
Product Width	5.55 cm
Bracket Height	12 cm
Warranty	12 months

Flexible RS232, RS485 and RS422 Communication

The W-99100-2S is designed for projects that require more control than a basic serial adapter. With support for multiple serial formats, parity settings, hardware and software flow control, and programmable custom baud rates, the card can be configured for a wide range of serial communication requirements.

Each serial port includes a 256-byte FIFO in both transmit and receive paths. This buffering capability helps manage serial data efficiently when connected devices generate continuous or burst traffic. Full modem-control support also makes the card suitable for applications that depend on traditional serial handshaking signals.

For engineering projects using RS232, RS485, or RS422 modes, customers should confirm the required wiring, transceiver configuration, communication protocol, and target equipment before ordering.

Environmental and Physical Characteristics

The W-99100-2S is specified for operation from 0°C to 50°C, with a storage-temperature range from 0°C to 100°C and supported humidity from 10% to 90% RH. These parameters make it suitable for controlled commercial, laboratory, equipment-room, and embedded-system environments.

Its compact dimensions help simplify integration into PCI Express-based computers, controllers, and purpose-built systems where motherboard serial ports are unavailable or insufficient.

Operating System Compatibility

The W-99100-2S supports a broad range of legacy and established operating systems, including:

• Windows 98 / ME / NT4.0

• Windows 2000 / XP / Vista

• Windows 7 / Windows 8 / Windows 10

• Windows Server 2003

• Linux

For new system deployments, buyers should provide the exact operating-system version and hardware platform when requesting compatibility confirmation.

Typical W-99100-2S Applications

The W-99100-2S is suitable for I/O expansion projects requiring additional serial communication channels, including embedded systems, industrial computers, equipment integration, legacy serial-device connections, test systems, control applications, and add-on I/O solutions.

Its PCI Express x1 architecture allows modern systems to retain access to serial-connected equipment without relying solely on built-in motherboard COM interfaces.

Why Choose the W-99100-2S PCIe Serial Card?

For B2B buyers, the value of the W-99100-2S lies in its combination of dual-port expansion, configurable serial communication, broad software support, compact dimensions, and MOSCHIP 99100-based architecture. It can help simplify system upgrades where existing serial peripherals must remain in service after a computer or motherboard replacement.

Request a Quote for W-99100-2S

For faster technical confirmation and quotation, please send your required quantity, destination country, target operating system, host computer or motherboard model, required serial mode, connected-device type, baud-rate requirement, and expected project schedule.

Contact us for product availability, compatibility confirmation, sample requirements, bulk pricing, packaging options, and delivery information for the W-99100-2S PCI Express dual serial port card.