Product Type | PCIe Serial Adapter Card |
Form Factor | Low-profile and standard height |
Chipset | 16C1050 UART |
Power Requirements | Powered via PCI Express slot |
Bracket Included | Full-height and low-profile brackets included |
StarTech 4-Port PCIe Serial Card RS-232/422/485 with ESD, TAA, Linux/Windows





Key Benefits

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- Supports RS-232, RS-422, and RS-485 protocols independently on each port via simple DIP switch configuration.
- Provides robust power and signal flexibility with onboard jumpers for 12V/5V/RI at 1.5A per port, reducing need for external hubs.
- TAA-compliant and OS-flexible (Windows/Linux), making it suitable for government and enterprise deployments.
Product Overview
4-PORT PCIE SERIAL CARD FEATURES ON-BOARD DIP SWITCHES ALLOWING EACH DB9 PORT TO OPERATE IN RS-232/RS-422/RS-485 INDEPENDENTLY; JUMPERS PROVIDE THE OPTION OF 12V/5V/RI @ 1.5A PER PORT; INCLUDES LOW-PROFILE BRACKETS; SUPPORTS WINDOWS/LINUXSpecifications
Product Overview
Wireless Features
Compliance & Origin
Country of Origin | Taiwan |
TAA Compliance | Yes |
Certification Standards | CE, FCC, RoHS, REACH |
Environmental Compliance | RoHS, WEEE, REACH |
Advanced Security Features
Electrical Protection | 15kV ESD protection on each port |
Isolation | No galvanic isolation |
Interfaces
Interface Type | PCI Express x1 |
Serial Ports | 4 x DB9 Male |
Supported Serial Protocols | RS-232, RS-422, RS-485 |
UART Type | 16C1050 |
Baud Rate Support | Up to 921.6 Kbps |
Connector Gender | Male |
Signal Voltage Support | ±15V max |
Data Bits Support | 5, 6, 7, 8, 9 |
Stop Bits Support | 1, 1.5, 2 |
Parity Support | None, Odd, Even, Mark, Space |
Flow Control Support | RTS/CTS, XON/XOFF |
ESD Protection | 15kV, Air and Contact Protection |
Current Output Per Port | Up to 1.5A at 5V/12V/RI |
Physical & Environmental
Dimensions | 167.64 mm x 120.65 mm x 20.32 mm |
Weight | 0.16 kg (0.35 lbs) |
Operating Temperature | 0°C to 70°C (32°F to 158°F) |
Storage Temperature | -20°C to 85°C (-4°F to 185°F) |
Humidity (Operating) | 5% to 95% non-condensing |
LED Indicators | Activity and Power per port |
Cloud Management & Licensing
Management Interface | None (hardware-controlled DIP switch configuration) |
Driver OS Support | Windows 11/10/8.1/7, Linux 3.x and 4.x |
Included Software | Drivers and configuration utility available online from StarTech |