Serial Port Cards

2-Port PCI Express RS-232 DB9 Serial Port Card for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, PCIE RS232 Card, PCIE Serial DB9 Port Card (PCIE-SE2)

$25.99

$ 12 .99 $12.99

4.6

pieceIE to 4 Independents Port Serials Port to 9Pin RS232 Expansion Card Serials Controllers Card

$20.06

$ 8 .99 $8.99

4.5

2-Port PCIe Serial Expansion Card with Industrial DB9 RS232 COM Ports, 16C550 UART WCH382 Chip for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, Low Bracket Included

$21.98

$ 10 .99 $10.99

5.0

Fafeicy 2-Channel Serial Port Relay Module, RS232 UART Protocol DB9 Interface, Manual Operation, Relay Switch Board, Copper Contacts, Normally Open

$15.85

$ 6 .99 $6.99

4.8

StarTech.com 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable - PCIe Serial Parallel Card (PEX2S1P553B)

$43.26

$ 20 .99 $20.99

4.4

SIIG Single Serial Port/RS-232 and Single Parallel Port PCIe Card Compatible with 16C550 UART (JJ-E20311-S1)

$35.90

$ 18 .99 $18.99

5.0

I/O Crest RS-232 DB9 Series 8x Serial (8S) 8 Port PCI-Express 2.0 x1 Card XR17V358 Chipset 16C550 UART

$68.78

$ 30 .99 $30.99

5.0

Single Port PCI Express x1 RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller to Single Serial DB9 Port

$25.08

$ 12 .99 $12.99

4.3

PCI E 4 Port RS232 Serial Port Card PCI Express Adapter Card 4 Independent 9 pin Standard Serial Ports Expansion Card for POS and ATM Applications

$27.50

$ 13 .99 $13.99

4.4

StarTech.com 2-Port PCI Express Serial Card with 16C1050 UART - RS232 Low Profile Serial Card - PCI Serial Card, TAA (PEX2S1050)

$43.36

$ 18 .99 $18.99

4.6

NOYITO RS422 to TTL UART MCU Serial Port Signal Mutual Conversion Module with Over-Voltage Over-Current Protection (3.3V)

$9.99

$ 4 .99 $4.99

5.0

Deal4GO DB-9 Male COM PS2 Serial Port I/O Board GRY5H GYY8P replacement for Dell OptiPlex 3040 3060 5060 3020 MT Tower Desktop, Green

$17.99

$ 7 .99 $7.99

4.7

StarTech.com 8-Port PCI Express RS232 Serial Adapter Card, PCIe to Serial DB9 Card, 16C1050 UART, 15kV ESD - Windows Only, TAA

$184.99

$ 78 .99 $78.99

4.7

Waveshare RS232 RS485 to RJ45 Ethernet Serial Server, RS232 and RS485 Dual Channels Independent Operation, Dual Ethernet Ports, PoE Network Port

$43.99

$ 21 .99 $21.99

4.8

CH9141 BLE UART Transparent Transmission 100m Distance，CH9141K BT Serial Port Module Evaluation Board New 2025 for Arrival High for Quality

$19.99

$ 8 .99 $8.99

4.6

StarTech.com 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 DB9 Serial Card, Standard/Low-Profile Brackets, 16C1050 UART, ESD Protection, Windows/Linux, TAA

$91.99

$ 38 .99 $38.99

4.5

HP 3TK82AA Second Serial Port - for EliteDesk 705 G4, 800 G4, ProDesk 600 G4 (MT, SFF)

$26.04

$ 11 .99 $11.99

4.3

CON-485-PE9, RS232 to RS485 converter, bi-directional port powered, full-duplex RS232 port to a half-duplex two-wire RS485, high-performance, high reliability with a 5-year replacement warranty.

$15.95

$ 6 .99 $6.99

5.0

Global Caché WF2SL iTach WiFi to Serial Module - Connects RS232 Control Devices to a Wi-Fi Network

$157.49

$ 76 .99 $76.99

4.4

zdyCGTime 1Port DB9 RS232Serial Port Bracket to 10 pin HeaderRibbon Cable Connector Adapter, DB9 Serial Male to 10P Motherboard Header Panel Mount Cable Serial Port Bracket (12in 4Pcs) (1 Port)

$8.29

$ 3 .99 $3.99

4.3

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Serial Port Cards