8 port Internal RS232 RS422 RS485 M.2 Isolation Surge

Item Number: SERM2-T3800iS


Product Description: 8 port High Speed Serial RS-232/422/485 M.2 B/M key Card supports 3KV Isolation 4KV Surge protection


Diarts designs 8 port RS232 RS422 RS485 M.2 Card, it allows embedded PC to add 8 Serial ports for system needs. M.2 B key or M key, that are newest slot the Embedded PC. That we design 8 port Serial from PCIe to M.2.


Features and Benefit

Expands 8 com ports for your system

High Speed Baud Rate up to 921.6Kbps

Design to meet PCI Express 2.0 Gen 1 compliant

Supports PCI Express x1, x2, x4, x8, and x16 Lane

3KV Isolation protection

4KV Surge Protection

Built-in 15KV ESD protection

Supports Industrial Specification

256 byte FIFOs

Supports Microsoft Windows, Linux, and QNX drivers

Supports 2280 / 2260




Communication controller: 16C550 UART Compatible register Set

Bus: B or M key x 1


Serial Interface

Number of ports: 8 ports

Serial Standard: RS-232/422/485

IRQ and I/O Address: Assigned by System


Serial Line Protection

Isolation: 3KV Isolation protect

Surge: 4KV protection

ESD Protection: 15KV ESD Protection for all signals



Baud rate: up to 921.6 Kbps

FIFOs: 256 byte


Serial Communication Parameters

Data Bits: 5, 6, 7, 8

Stop Bits: 1, 1.5, 2

Parity: None, Even, Odd, Space, Mark


Serial Signals


RS-422: TxD+, TxD- RxD+, RxD-, GND

2 Wire RS-485: Data+, Data-, GND

4 Wire RS-485: TxD+, TxD-, RxD+, RxD-, GND


Driver Support

Windows: XP, 2003, Vista, 2008, Win 7/8.1/10

Linux: 2.6

QNX: 6.0


Environmental Limits

Operating Temperature: -30 ~ 75℃

Storage Temperature: -40 ~ 85℃

Ambient Relative Humidity: 5 ~ 95% Non-Condensing


Standards and Certifications

CE and FCC supports


Product Production

Production: Made in Taiwan

Product Location: Taipei, Taiwan


Package Content

8 port M.2 B/M Key Card x 1

1 port RS232/422/485 3KV Isolation 4KV Surge 15KV ESD Adapter                x8

Cable x 4

Quick Instill Guide x 1

Driver CD x 1

Out of stock


Diarts designs 8 port Internal Serial RS232 RS422 RS485 M.2 card with 3KV Isolation 4KV Surge

it is good for Embedded System

SERM2-T3800iS meets industrial level spec

XR17V352 chipset