W-99100-2S1P Versatile PCIe x1 Dual Serial and Parallel Port Expansion Card

Reliable PCIe Expansion for Serial and Parallel Equipment

The W-99100-2S1P is a PCI Express expansion card designed to add two serial ports and one parallel port to a compatible desktop or industrial computer with an available PCI Express x1 slot. Built around the ASIX AX99100 chipset, it provides a practical way to integrate serial and parallel connectivity into systems that still depend on established I/O interfaces.

For B2B buyers, system integrators, maintenance teams, automation engineers, and equipment builders, the W-99100-2S1P offers a compact expansion option for connecting legacy peripherals without replacing an entire host computer. Its 2S+1P configuration makes it especially suitable for applications that require multiple communication ports from a single PCIe slot.

Key Specifications

AX99100 Controller Features

The AX99100 is a single-chip PCIe multi-I/O controller integrating a PCIe 2.0 Gen 1 endpoint controller and SerDes. In its 2S+1P configuration, the architecture supports dual serial interfaces and one parallel interface. The controller supports both legacy and MSI interrupts, PCI Power Management 1.2, ASPM power management, and multiple PCI Express functions.

Its serial architecture supports dual or quad UART configurations, hardware and software flow control, 5-, 6-, 7-, 8-, and 9-bit serial formats, and Even, Odd, None, Space, and Mark parity. Custom baud rates can be generated through an internal PLL or external clock, while on-chip 256-byte transmit and receive FIFOs help manage serial data.

The AX99100 architecture also supports DMA burst transfer, remote wakeup, transceiver shutdown, 9-bit multi-drop communication, and Slow IrDA up to 115200 bps.

For multiprotocol designs, the controller platform supports RS-232, RS-422, and RS-485 and bi-directional serial speeds up to 25 Mbps per port. Final interface operation may depend on the card implementation, connected equipment, driver, and system configuration, so buyers should confirm their required serial standard before ordering.

The AX99100 is supplied in a 68-pin QFN RoHS-compliant package and integrates an on-chip power-on reset circuit and voltage regulation functions.

Parallel Port Compatibility

The integrated parallel-port controller is compatible with IEEE 1284 and supports SPP, Byte, and ECP modes. This makes the W-99100-2S1P relevant for systems using parallel-interface peripherals, test equipment, control devices, or other established hardware that cannot be migrated easily to newer interfaces.

Operating System Support

According to the listed product specifications, supported systems include Windows 10 32/64-bit, Windows 8/8.1 32/64-bit, Windows 7 32/64-bit, Windows Vista 32/64-bit, Windows XP 32/64-bit, Windows 2000, Windows Server 2012, Windows Server 2008 R2, and Windows Server 2003 32/64-bit.

The product information also lists Intel-based Mac OS 10.x tested up to 10.9 and Linux 2.4.x and later, tested up to Linux 3.5.

For deployment projects, driver and operating-system compatibility should be confirmed against the exact host environment before volume purchasing.

Designed for B2B Integration and Legacy I/O Projects

The W-99100-2S1P can be considered for industrial PCs, equipment maintenance, factory automation, point-of-sale systems, instrumentation, data collection, machine communication, and other projects that require PCIe-based access to serial or parallel devices. Its compact board dimensions make it useful where internal installation space is limited.

The AX99100 controller also integrates SPI, I2C master, Local Bus, GPIO, power-on reset, and on-chip voltage regulation functions. These are chipset-level capabilities; the W-99100-2S1P product configuration described here is specifically identified as two serial ports plus one parallel port.

Why Choose W-99100-2S1P?

W-99100-2S1P combines PCI Express x1 connectivity with two serial ports and one parallel port in a compact expansion-card format. The ASIX AX99100 controller provides a feature-rich architecture for systems that need dependable access to established serial and parallel interfaces.

For system integrators and industrial users maintaining equipment that still relies on conventional communication ports, the W-99100-2S1P provides a practical option for expanding host connectivity while retaining PCI Express compatibility.

Request a Quote or Compatibility Check

For an accurate quotation or project evaluation, send your required quantity, destination market, host operating system, serial-interface requirement, connected device type, and expected application. Providing these details helps confirm whether the W-99100-2S1P PCIe serial and parallel expansion card matches your system before procurement.