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The W-9900-4S PCI-E Expansion Card is a 4-port serial expansion solution designed for desktop computers, industrial PCs, control systems, workstations, and other compatible platforms that require additional serial connectivity through a PCI Express interface.
Built with the MOS-9900 chip, this PCI-E riser card provides four serial ports and uses a PCI-e X16 interface. It is intended for systems where multiple serial devices need to be connected through one expansion card.
For system integrators, computer hardware distributors, industrial equipment suppliers, OEM manufacturers, and other B2B buyers, the W-9900-4S provides a practical way to expand serial communication capacity while supporting OEM and ODM cooperation, stock supply, and customized packaging requirements.
The W-9900-4S PCI-E Expansion Card combines four serial ports with a straightforward PCI Express expansion design.
Model: W-9900-4S
Product type: PCI-E Expansion Card
Item type: PCI-E riser card
MOS-9900 chipset
PCI-e X16 interface
4 serial ports
Designed for multi-port serial expansion
Product status: Stock
OEM service welcomed
ODM service welcomed
Color box packaging
Customized packaging available
12-month warranty
Place of origin: Guangdong, China
Specification | Details |
Model | W-9900-4S |
Product Name | PCI-E Expansion Card |
Item Name | PCI-E Riser Card |
Chip | MOS-9900 |
Interface Type | PCI-e X16 |
Port Quantity | 4 Serial Ports |
Main Feature | 4 Serial Riser |
Product Status | Stock |
OEM Service | Welcomed |
ODM Service | Welcomed |
Package | Color Box / Customized |
Warranty | 12 Months |
Place of Origin | Guangdong, China |
The main advantage of the W-9900-4S PCI-E Expansion Card is its four-port serial configuration.
Instead of installing several individual expansion cards, compatible computer systems can use one card to add four serial communication channels. This makes the W-9900-4S suitable for applications where several serial devices must operate from the same host system.
Typical applications can include:
Industrial computer integration
Equipment control systems
Workstation expansion
System maintenance
Existing serial device connectivity
Machine and peripheral communication
Computer hardware integration
OEM equipment projects
For B2B buyers, the four-port design can simplify hardware sourcing when multiple serial interfaces are required within one computer system.
The W-9900-4S uses the MOS-9900 chipset as the core of its serial expansion architecture.
Chipset information is particularly important for system integrators and technical buyers because it helps identify the hardware platform and allows compatibility to be assessed before purchasing.
When comparing different PCI-E serial expansion cards, buyers can use the MOS-9900 chip specification together with motherboard, operating system, and application requirements to determine whether the W-9900-4S fits their project.
For larger B2B deployments, customers are encouraged to provide their intended system configuration when requesting additional technical information.
The W-9900-4S connects to the host computer through a PCI-e X16 interface.
Before installation, users should confirm that the target motherboard provides a compatible PCI Express expansion slot and that sufficient chassis space is available for the card.
For equipment manufacturers and system integrators, checking the interface type in advance can help avoid installation issues and make component selection more efficient.
The PCI-e X16 interface is clearly defined in the product specification, allowing technical buyers to compare the W-9900-4S with other serial PCI-E expansion cards during the sourcing process.
Buyer Requirement | W-9900-4S Capability |
Multiple Serial Connections | 4 Serial Ports |
PCI Express Expansion | Yes |
Host Interface | PCI-e X16 |
Controller Chip | MOS-9900 |
Stock Availability | Yes |
OEM Service | Available |
ODM Service | Available |
Customized Packaging | Available |
Standard Packaging | Color Box |
Warranty | 12 Months |
This specification structure makes it easier for distributors and technical procurement teams to quickly evaluate whether the W-9900-4S matches their sourcing requirements.
Many established machines, control systems, and computer-based devices continue to require serial connectivity.
The W-9900-4S 4-port serial PCI-E Expansion Card provides an option for systems where the existing motherboard does not provide enough serial interfaces.
It can be considered for:
Industrial automation computers
Control system PCs
Data collection equipment
Hardware maintenance projects
Legacy equipment integration
System assembly
Commercial computer upgrades
Multi-device communication environments
Actual compatibility should always be evaluated according to the host computer, motherboard interface, connected equipment, and software environment.
For applications that require several serial connections, a four-port expansion card can offer a more centralized solution than multiple single-port cards.
The W-9900-4S allows four serial connections to be added through one PCI-E expansion card.
This can help system builders:
Reduce the number of separate expansion cards required
Centralize multiple serial connections
Simplify hardware sourcing
Support systems with several serial peripherals
Build consistent configurations for repeated equipment projects
These benefits are particularly relevant for B2B customers that purchase components for production, system integration, distribution, or maintenance.
The W-9900-4S is listed as a stock product.
For distributors, system integrators, and project buyers, stock status can be an important sourcing factor, especially when preparing repeat orders or maintaining established hardware configurations.
Customers can provide their required quantity during the inquiry process so that current supply information and quotation details can be confirmed.
OEM and ODM services are welcomed for the W-9900-4S PCI-E Expansion Card.
This makes the product suitable for computer hardware brands, distributors, wholesalers, equipment manufacturers, and system integrators that may have specific commercial requirements.
Potential cooperation requirements can include:
OEM supply
ODM projects
Customized packaging
Volume purchasing
Distribution orders
Project-based sourcing
The standard package is a color box, while customized packaging can also be discussed according to the buyer's requirements.
The W-9900-4S comes with a 12-month warranty.
For B2B buyers, clearly defined warranty information can simplify supplier evaluation and after-sales planning.
When planning long-term or volume purchases, customers can discuss warranty requirements, order quantities, packaging, and other commercial details during the quotation process.
The W-9900-4S is designed for buyers who need a straightforward multi-port serial expansion solution.
Its main characteristics include:
Four serial ports
MOS-9900 chipset
PCI-e X16 interface
Stock availability
OEM and ODM support
Customized packaging options
12-month warranty
For distributors, system integrators, equipment manufacturers, and hardware suppliers, these features provide a clear foundation for evaluating the card for serial expansion projects.
Looking for a W-9900-4S PCI-E Expansion Card for system integration, distribution, equipment maintenance, or OEM projects?
Send us your required quantity, motherboard configuration, application details, packaging requirements, and OEM or ODM needs. We can provide additional product information and quotation details based on your purchasing requirements.
Contact us today to request pricing for the W-9900-4S 4-Port Serial PCI-E Expansion Card.
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