XM-PEX-2S PCI-E 2-Port Dual DB9 Serial/RS232 Port PCI Express (PCIe x1) Controller Card | WCH382L Chipset | 16C550/16C552/16C554 and 16C750 UART
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
Bottom line: The XM-PEX-2S PCI-E 2-Port Dual DB9 Serial/RS232 Port PCI Express (PCIe x1) Controller Card | WCH382L Chipset | 16C550/16C552/16C554 and 16C750 UART is a niche pick — read recent reviews before buying in the retro graphics cards category, priced around $19.99. Read recent reviews carefully before committing.
The XM-PEX-2S Dual RS232/Serial Port PCI Express (PCIe) Adapter Card is designed to add two 9-pin RS232/Serial ports to your PCI Express enabled desktop computer. This dual port RS232/Serial PCIe adapter card features 256-byte FIFO buffer to support fast data transferring to ensure optimal performance in multitasking environment. This is a high performance adapter card to add two RS232/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. Both standard and low profile…
SpecPicks Verdict
SpecPicks classifies X-MEDIA XM-PEX-2S PCI-E 2-Port Dual DB9 Serial/RS232 Port PCI… as a niche pick — read recent reviews before buying in the retro graphics cards category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. X-MEDIA'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 retro graphics 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
- ✓ Compliant with PCI Express Specification Rev 1.1
- ✓ Backed by X-MEDIA's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ 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
- Compliant with PCI Express Specification Rev 1.1
- Compatible with 16C550/16C552/16C554 and 16C750 UART
- Supports 256-byte FIFO buffer; Supports 5-6-7-8-bit serial format; Data transfer rate up to 115Kbps on each port
- Standard and Low Profile Bracket Included
- Supported OS: Windows 98SE / ME / XP / Vista / 7 / 8 / 8.1 / 10; Windows Server 2000 / 2003 / 2008 / 2016; DOS; Linux
Full Specifications
| Brand | X-MEDIA |
|---|---|
| Style | Serial Controller Card |
| Style Name | Serial Controller Card |
| Model Number | XM-PEX-2S |
| Supported OS | Windows 98SE / ME / XP / Vista / 7 / 8 / 8.1 / 10; Windows Server 2000 / 2003 / 2008 / 2016; DOS; Linux |
| Compatibility | Linux |
| Built-In Media | CD Driver Disk w/User Guide, Low Profile Bracket, XM-PEX-2S 2-Port Dual Serial PCIe Card |
| Mfr Part Number | XM-PEX-2S |
| Compatible Devices | Personal Computer |
| Hardware Interface | PCI Express x1, Serial Interface |
| Warranty Description | 1 Year Warranty |
| Item Dimensions L x W x H | 4.75"L x 3.38"W x 0.75"H |
Ready to buy?
X-MEDIA XM-PEX-2S PCI-E 2-Port Dual DB9 Serial/RS232 Port PCI Express (PCIe x1) Controller Card | WCH382L Chipset | 16C550/16C552/16C554 and 16C750 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 2026-07-22. Price and availability subject to change.
Related Retro Graphics Cards
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- How to Build a Windows 98 Retro PC in 2026
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best 1440p Gaming GPUs in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
More reviews from the SpecPicks archive
Browse all reviews →- Grok 4.5 Tops AutomationBench at 51%: Cloud Score vs Local-Rig Reality
- Best GPUs for Local LLM Inference in 2026
- Intel Arc Pro B60 AI Performance: 24GB VRAM Explained
- Why a Red Hat Engineer Ditched ARM64 for AMD Ryzen (Linux AI Builds)
- Ryzen 7 9800X3D vs Ryzen 9 9900X: Which Zen 5 CPU Wins in 2026?
- Best Parts for a Budget Ryzen + RTX 3060 Gaming PC Build in 2026
- Self-Host NextCloud on a Raspberry Pi 4 8GB: A Complete Private-Cloud Build for 2026
- Ryzen 5 5600G vs Ryzen 7 5700X for a 2026 Home Lab
- Alienware AW3426DW Review: QD-OLED Ultrawide Gaming at $699
- MTP in llama.cpp: The Regression, the Fix, and the KV-Cache Free Lunch
- Build a 3D-Printed Cyberdeck Music Workstation on a Raspberry Pi 4
- GPT-5.6 Sol Nearly Matches Fable 5 at a Third the Cost: The Local-Rig Angle
- GLM-5.2 Local: What GPU Actually Runs the Top Open-Weights LLM
- Qwen 3.6 27B at 2x tok/s: Luce DFlash on One RTX 3090
- Best SSD to Upgrade a PS4 Pro: Crucial BX500 vs Samsung 870 EVO Real-World Gains
- Ryzen 5 5600G vs Ryzen 7 5700X for a Budget LLM + Gaming Build
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- Best Budget PC Gaming Peripherals in 2026: 5 Picks That Punch Above Their Price
- RTX 5070 Ti vs RTX 5080: Is the $400 Step-Up Worth It at 1440p and 4K?
- Open WebUI vs LM Studio: Best Local Chat Front-End for a 12GB GPU
- Best Gaming Mouse Pad for Competitive FPS in 2026: 5 Picks Ranked by Glide, Tracking, and Sweat Resistance
- Best Streaming Gear for New Streamers in 2026: 5 Picks to Start On-Air
- Can a Raspberry Pi 4 8GB Run a Local LLM in 2026? Realistic tok/s
- Gemma-4-Harmonia-31B Uncensored on RTX 3060 12GB: Quantization, VRAM, and tok/s