SIIG
SIIG Legacy and Beyond Series Quad (4 Port) Serial RS-232 PCIe Card with 16C550 UART
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
SIIG’s Quad-Serial Port RS-232 PCIe Card is designed to provide four 9-pin RS-232 serial ports to your PCI Express-enabled desktop computer. This 4-port serial PCIe adapter card features 256-byte FIFO buffers to support fast data transferring to ensure optimal performance in multitasking environment. This is a high performance adapter card to add four RS-232 serial ports for connecting additional serial-based devices such as a POS system, industrial testing and control device, security system, logistic management equipment and more.Requirements:-Desktop PC with one available PCI Express (PCIe…
SpecPicks Verdict
SpecPicks classifies SIIG Legacy and Beyond Series Quad (4 Port) Serial RS-232 PCIe Card w… as a mid-pack option worth checking against alternatives in the expansion cards category, based on 13 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. SIIG's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.1★ customer rating
- ✓ Quickly adds four RS-232 serial ports through an available PCI Express slot
- ✓ Backed by SIIG's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Limited review volume so far — fewer data points on long-term reliability
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Quickly adds four RS-232 serial ports through an available PCI Express slot
- Supports serial port data transfer rates up to 115.2 Kbps, compatible with 16C550 UART
- 256-byte depth FIFO buffer supports fast data transfer especially in a multitasking environment
- Perfect solution to connect with a POS system, industrial testing and control device, security system, logistic management equipment, etc.
- Chipset: ASIX/MosChip MCS9900CV-AA.
- At SIIG, we are proud of our products and service. Our products are of high quality and built to last. We provide Manufacturer Warranty for our products and email support. Contact us thru Amazon if any issues arise.
Full Specifications
| Brand | SIIG |
|---|---|
| Style | quad serial port |
| Chipset | ASIX/MosChip MCS9900CV-AA. |
| Style Name | quad serial port |
| Unit Count | 4.0 Count |
| Model Number | LB-S00114-S1 |
| Mfr Part Number | LB-S00114-S1 |
| Operating System | Linux, Windows 10 |
| Compatible Devices | POS System, Industrial Testing and Control Device, Security System, Logistic Management Equipment, Personal Computer, Laptop, Printer, Router |
| Hardware Interface | PCI |
| Warranty Description | 1 Year Manufacturer |
| Item Dimensions L x W x H | 4.72"L x 4.72"W x 0.79"H |
Ready to buy?
SIIG Legacy and Beyond Series Quad (4 Port) Serial RS-232 PCIe Card with 16C550 UART is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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