Industrial Level SFP / Ethernet Switches
Marvell chipset supports 2 SFP Fiber with 1GigaLAN speed
SFP Fiber supports 1Giga and 100M speed
Power Over Ethernet PSE
8 port 10/100/1000 Ethernet Switches
Din Rail / Compact size designed
Din Rail / Compact size designed
Expands 8 com ports for your system
High Speed Baud Rate up to 921.6Kbps
Compatible with 3.3V/5V PCI and PCI-x slot
Power Supply through communication line(RI signal)
Built-in 15KV ESD protection
Supports Industrial Specification
256 byte FIFOs integrated UART
Supports Microsoft Windows, Linux, and DOS drivers
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
Built-in 15KV ESD protection
Supports Industrial Specification
256 byte FIFOs
Supports Microsoft Windows, Linux, and QNX drivers
Expands 8 com ports RS232 RS422 RS485 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
Built-in 15KV ESD protection
Supports Industrial Specification
256 byte FIFOs
Supports Microsoft Windows 10, Linux, and QNX drivers
Expands 8 com ports for your system
High Speed Baud Rate up to 921.6Kbps
Compatible with 3.3V/5V PCI and PCI-x slot
Max 10 device connectivity for 4 Wire RS-485(RS-422 Multi-Drop) mode
Max 32 device connectivity for 2 Wire RS-485 mode
Built-in 15KV ESD protection
600W Surge protection
Supports Industrial Specification
256 byte FIFOs integrated UART
Supports Microsoft Windows, Linux, and DOS drivers
Expands 8 com ports RS422/485 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
Max 10 device connectivity for 4 Wire RS-485 ( RS-422 Multi-Drop) mode
Max 32 device connectivity for 2 Wire RS-485 mode
Built-in 15KV ESD protection
600W Surge protection
Supports Industrial Specification
256 byte FIFOs
Supports Microsoft Windows 10, Linux, and QNX drivers
Out Of Stock
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
Specification
Hardware
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
Performance
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-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND. RI
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
Item Number: SERMPE-T3800i
Product Description: 8 port High Speed Serial RS-232/422/485 Mini PCIe Card supports 3KV Isolation 4KV Surge protection
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 Mini PCIe Full size
Specification
Hardware
Communication controller: 16C550 UART Compatible register Set
Bus: Mini PCIe slot
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
Performance
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-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND. RI
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 Mini PCIe Card x 1
1 port RS232/422/485 3KV Isolation 4KV Surge 15KV ESD Adapter x 8
Quick Instill Guide x 1
Driver CD x 1
The 8-Port RS232 M.2 5KV Isolation Card provides robust serial communication with high-level surge protection for demanding industrial environments
Support flow contril for full duplex and half duplex
Supports 1K MAC address
Embedded 448K bit packet buffer
8 port Embedded 10/100 switch controller
Supports Auto MDI/MDIX function
Supports max forwarding pack length 1536 bytes
Supports store and forward transmission
Supports flow control
Supports TB 3pin 5.08mm and DC Jack power input
Din Rail
Rigid IP-30 housing design
This 8-Port RS422/RS485 M.2 card provides 3KV isolation, ensuring reliable data transfer for long-distance and multi-drop serial connections in demanding industrial settings.
Versatile 8-port M.2 card supporting RS232, RS422, and RS485 with 3KV isolation for reliable industrial serial communication.
This article describes the 8-Port RS232 M.2 B/M Key Card, a solution for connecting multiple RS232 serial devices to modern computers via the M.2 slot. It covers the card’s features (multiple ports, M.2 compatibility, high-speed communication), applications (industrial automation, POS systems, networking, legacy system integration), and on-page optimization strategies (keyword integration, compelling meta descriptions, structured content) to improve search engine visibility and attract potential customers. It emphasizes the card’s role in bridging the gap between legacy RS232 devices and modern systems.