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Introduction

Expand legacy-free industrial PCs, edge computers or digital-signage players into reliable serial networks with the Neuftech IIO-COMB Series. The card plugs into any M.2 2230 A- or E-Key slot that exposes PCIe ×1 and instantly provides two software-selectable RS-232 or RS-485 ports. Engineered for 24-hour factories, outdoor cabinets and in-vehicle gateways, every unit operates from –40 °C to +85 °C, survives ±15 kV ESD and delivers 2.5 kV isolation on the RS-485 variant. A 30 cm, EMI-shielded flat cable terminates in standard DB9 males, so you can mount the ports on a blank PCIe bracket or panel cut-out. Drivers for Windows 10/11 and Linux (3.8+) are WHQL & Ubuntu LTS certified, eliminating compatibility guess-work. Whether you need long-range multi-drop RS-485 for Modbus sensors or hardware-handshaked RS-232 for legacy CNC machines, the IIO-COMB gives you industrial durability in the world’s smallest form factor

Features

1. 
   [Wide-Temperature Reliability] Works from –40 °C to +85 °C for uninterrupted serial communication in outdoor kiosks, factory floors and edge AI boxes.
   
2. 
   [Dual-Protocol Flexibility] Choose 2×RS-232 (256 kbps, 3.3 V) or 2×RS-485 (500 kbps, 5 V, half/full-duplex) on one M.2 card—no extra adapters needed.
   
3. 
   [Industrial-Grade Protection] ±15 kV ESD, 2.5 kV isolation on RS-485 version, and solid-state capacitors give 24×7 immunity to noise and surges.
   
4. 
   [Driver-Free Setup] Windows 10/11 & Linux kernels 3.8+ detect the AX99100 chipset instantly; WHQL & Ubuntu LTS certified—no hunting for CDs.
   
5. 
   [Space-Saving 2230 Form] Fits any M.2 A or E-Key socket with PCIe ×1 signal; 30 cm flat cable routes DB9 ports to bulkheads without blocking airflow.
   
   
   

Shipping List

• 
  1× IIO-COMB M.2 serial card (RS-232 or RS-485 version as ordered)
  
• 
  1× 30 cm DB9 breakout cable
  
• 
  2× M.2 mounting screw set
  
  
  

Applications

Ideal for adding rugged, wide-temp serial ports to industrial PCs, edge gateways, kiosks, and in-vehicle computers that only have an M.2 A/E-Key slot free.

Specification

SpecificationDetailsForm FactorM.2 2230 A/E-Key (PCIe ×1 signal required)ControllerASIX AX99100Serial Ports2×RS-232 (3.3 V, 256 kbps)or2×RS-485 (5 V, 500 kbps, 2.5 kV isolated)ESD Protection±15 kV (air & contact)Surge Immunity600 W transient voltage suppressorOperating Temperature–40 °C to +85 °CRelative Humidity5 % – 95 % non-condensingCable Length & Type30 cm flat, SH1.0 mm, EMI-shielded, DB9 male endsOS SupportWindows 10/11 (x86/x64), Linux kernel 3.8+, Ubuntu LTS, CentOS, DebianCertificationsCE, FCC Class A, RoHS, WHQLPower Consumption< 1 W (typical)