StarTech.com PCIe Card with Serial and Parallel Port - PCI Express Combo Adapter Card with 1x DB25 Parallel Port & 1x RS232 Serial Port - Expansion/Controller Card - PCIe Printer Card, TAA

$47.99

$ 24 .99 $24.99

4.8

Symcom MotorSaver RS-485 Communications Module/2-Wire for 777, 77C and 601 Models, Model RS485MS-2W

$150.98

$ 74 .99 $74.99

5.0

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

4.4

PCI-E to Serial, Asixx PCI-E to Serial Card, PCI-E PCI Express to Serial DB9 RS232 2-Port Controller Adapter Card Compliant with PCI Express Specification Revision 1.1

$8.59

$ 3 .99 $3.99

4.5

NOYITO RS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection

$8.99

$ 3 .99 $3.99

4.9

Siig - Dual Serial Pci Card

$132.50

$ 65 .99 $65.99

5.0

StarTech.com 6ft (1.8m) 2-Port FTDI USB to Serial RS232 Adapter Cable with COM Retention, USB to RS232 Adapter - TAA

$66.65

$ 26 .99 $26.99

4.4

GT200-DP-RS Universal Serial/PROFIBUS DP Gateway

$235.00

$ 99 .00 $99.00

4.6

IO CREST 2 Port RS-232 DB9 Serial M.2 B+M Key Controller Card SI-ADA15069

$36.13

$ 15 .99 $15.99

4.4

SUNIX SP 1-Port RS-232 + 1-Port Parallel PCI-E Card (MIO6469A)

$21.59

$ 10 .99 $10.99

4.5

Ebid-Dealz Replacement for Micro MFF Serial Port Module Interface Dell Optiplex 3070 5070 7070 DKJHY 0DKJHY CN-0DKJHY

$16.00

$ 6 .99 $6.99

4.3

Waveshare RS232/485/422 to RJ45 Ethernet Module, TCP/IP to Serial, with POE Function, Bi-Directional Transparent Transmission, Suitable for Data Acquisition, Intelligent Instrument Monitoring, etc

$35.99

$ 17 .99 $17.99

4.7

2-Port Expansion Card (ISA RS232 Serial and Parallel Port), 5V Adapter Card ISA COM1 COM2 LPT Card PC Adapter

$36.99

$ 17 .99 $17.99

4.8

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

$79.25

$ 33 .99 $33.99

4.5

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

$184.99

$ 74 .99 $74.99

4.6

SIIG Legacy and Beyond Series 2 Port (Dual) Serial / RS-232 PCIe Card with 16C550 UART

$25.99

$ 10 .99 $10.99

4.9

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

$ 7 .99 $7.99

4.3

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Internal Components