Your Browsing History
- Sold by Newegg
Any questions? Our AI mode will help you find out quickly.
Try me now

Quick View
PCI to 8x Serial Port RS232 DB9 COM Expansion Card I/O Controller Riser Adapter Chipset Systembase 16C1058 with Output Cable
Limited time offer, ends 08/15
- Model #: C75J*OYJ*G1*0717-169
- $69.96 –
- Free Shipping

Quick View
RS232 to RS485 Serial Network Ethernet Device Server Active Converter DB9 Female with Power Supply Cable for Industrial Use
- Model #: DW-TXI126
- $27.99 –
- Free Shipping

Quick View
PCI to 8x Serial Port RS232 DB9 COM Expansion Card I/O Controller Riser Adapter Chipset Systembase 16C1058 with Output Cable
- Model #: DW-TXB062
- $70.99 –
- Free Shipping

Quick View
PCI to 8x Serial Port RS232 DB9 COM Expansion Card I/O Controller Riser Adapter Chipset Systembase 16C1058 with Output Cable
- Model #: DW-TXB062
- $69.33 –
- Free Shipping

Quick View
RS232 to RS485 Serial Network Ethernet Device Server Active Converter DB9 Female with Power Supply Cable for Industrial Use
- Model #: DW-TXI126
- $26.45 –
- Free Shipping

Quick View
PCI-Express to 8 Ports RS232 DB9 Serial Card with Asix mcs9900 Fan Output Cable Pice RS-232 high Speed Chipset 920KB
- Model #: TOLDB08TR2Z7VZ
- $138.99 –
- Free Shipping

Quick View
MM-PCI16C1058-8S PCI to 8-Port RS232 Serial Adapter Card 926.1Kbps Desktop COM Port with 1 to 8 DB9 Serial Cable Support PCIIRQ Sharing
- Model #: TOLDB0FHKZ9JCZ
- $100.99 –
- Free Shipping

Quick View
Conceptronic 4 Port DB9-RS232 Serial PCIe Card
- Model #: TOLDB0D96KXT8D
- $194.99 –
- Free Shipping

Quick View
2Port Serial DB9 RS232 PCIe 1.0 x1 Network Adapter with LowProfile Bracket, Model SIPEX15055
- Model #: B3EN-S32
- $46.99 –
- Free Shipping

Quick View
Ethernet RJ45 to RS232 DB9 Serial Port Device Server Converter Industrial Ethernet LAN Adapter Support TCP/RTU/UDP Modes
- Model #: DW-TXI022
- $29.99 –
- Free Shipping

Quick View
PCIe to 4 x Serial Port DB9 RS232 COM Expansion Card PCI Express X1 Riser Card Adapter Chipset ASIX/AX99100
- Model #: DW-TXB077
- $17.17 –
- Free Shipping

Quick View
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)
- Brand: HP
- Part Number: PCIE-SE2
- Connectors: 1 x RJ45
- Interface: PCI
- Model #: 141931474414
- $53.99 –
- Free Shipping

Quick View
8 Port RS-232 DB9 Serial M.2 B+M Key Controller Card SI-ADA15071
- Model #: TOLDB0FMLH12XL
- $108.99 –
- Free Shipping

Quick View
Syba 2 Port DB9 RS-422/485 Serial PCI-Express 2.0 x1 Card (SI-PEX15043)
- Model #: TOLDB00TWFIM5E
- $99.99 –
- Free Shipping

Quick View
IO CREST 2 Port RS-232 DB9 Serial M.2 B+M Key Controller Card SI-ADA15069
Limited time offer, ends 08/15
- Model #: C7FK-OYS-2026.7.28-568
- $87.99 –
- Free Shipping

Quick View
8 Serial Port DB9 RS232 PCIe Riser Card PCI-Express X1 Expansion Card Adapter High Speed 920KB with Heat Sink Chip ASIX AX9900
Limited time offer, ends 08/15
- Model #: C75J*OYJ*G1*0717-136
- $62.96 –
- Free Shipping

Quick View
IO CREST 8 Port RS-232 DB9 Serial M.2 B+M Key Controller Card SI-ADA15071
- Model #: TOLDB0CLFLBYHY
- $108.99 –
- Free Shipping

Quick View
PCIe to Dual RS-485/422 Serial Port Card with DB9 Connectors - High-Speed 1-to-2 Multi-Port Expansion Card, Terminal Block Adapters
- Model #: TOLDB0F9FMG1PZ
- $75.99 –
- Free Shipping

Quick View
Syba 2 Port Serial DB9 RS232 PCI-e 1.0 x1 with Low Bracket SI-PEX15055
- Model #: TOLDB01LY3YUI9
- $82.99 –
- Free Shipping

Quick View
Inline PCIe Serial Card, 4 Port RS-232 Interface, D-Sub 9, CH384L, Low Profile Brackets, UART Interface, High Data Rate, 76619E
- Model #: TOLDB0GLG76G29
- $72.99 –
- Free Shipping

Quick View
PCIe to 4 Ports DB9 RS232 COM Serial Port I/O PCI-E X1 Riser Card Expansion Adapter Chipset ASIX/AX9900 for Desktop PC Computer
Limited time offer, ends 08/15
- Model #: C75J*OYJ*G1*0717-157
- $20.96 –
- Free Shipping

Quick View
1PCS PCI to RS-232 Serial Card 2 Ports RS232 to PCI Converter DB9 COM Adapter UT-7702
- Model #: TOLDB0GWHFKNTJ
- $112.99 –
- Free Shipping

Quick View
PCIE-E to RS-232 serial port expansion card COM port desktop computer host adapter card 9-pin DB9 industrial control
Limited time offer, ends 08/31
- Model #: C73X-L616-41
- $59.30 –
- More options from $59.30 - $61.30
- Free Shipping

Quick View
PCIe 1X to 8 Serial Port DB9 RS232 Expansion Card Adapter Chip ASIX AX9900 for PC, Touch Screen, Scanner, Printer, Modem, Reader
Limited time offer, ends 08/15
- Model #: C75J*OYJ*G1*0717-195
- $68.96 –
- Free Shipping

Quick View
Tripp Lite 2-Port DB9 (RS-232) Serial PCI Card with 16550 UART, Full Profile (PCI-D9-02)
- Model #: TOLDB01H9T9UIC
- $104.99 –
- Free Shipping

Quick View
Syba 2 Port DB9 RS-422 / 485 Serial PCI-Express 2.0 x1 Card (SI-PEX15043)
Limited time offer, ends 08/15
- Model #: C7FK-OYS-2026.7.28-737
- $97.99 –
- Free Shipping

Quick View
Syba 2 Port DB9 RS-422 / 485 Serial PCI-Express 2.0 x1 Card (SI-PEX15043)
Limited time offer, ends 08/15
- Model #: C7FK-OYS-2026.7.28-550
- $97.99 –
- Free Shipping

Quick View
IO CREST 8 Port Serial DB9 RS-232 PCI Controller Card RDC C6238 Chipset SI-PCI15068
Limited time offer, ends 08/15
- Model #: C7FK-OYS-2026.7.28-553
- $75.99 –
- Free Shipping

Quick View
JAENFONG Ethernet RJ45 to RS232 DB9 Serial Port Device Server Converter Industrial Ethernet LAN Adapter Support TCP/RTU/UDP Modes
- Model #: ZZ-959
- $30.31 –
- Free Shipping

Quick View
Vszerda Dual Port PCI Express RS-232 DB9 Serial Port Card for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, PCIE 2X DB9 Card
Limited time offer, ends 08/16
- Model #: C745-Lsy715-1888
- $31.99 –
- Free Shipping

Quick View
2 Port RS-232 DB9 Serial M.2 B+M Key Controller Card SY-PEX15066
- Model #: TOLDB0FMLD3RJL
- $83.99 –
- Free Shipping

Quick View
8 Port RS-232 DB9 Serial PCI-e 2.0 x1 Card XR17V358 Chipset 16C550 UART SI-PEX15041
- Model #: TOLDB00M1BQLO0
- $118.99 –
- Free Shipping

Quick View
LINDY 8 Port Serial RS-232, 16C950 128 Byte FIFO PCI Card Std Profile (51275)
- Model #: TOLDB003OAWZKG
- $723.99 –
- Free Shipping

Quick View
PCIe 1X to 1 Port DB9 RS232 Serial Port + 1 Port DB25 Parallel Port Expansion Card I/O PCI Express Riser Card Chip ASIX/AX9900
- Model #: DW-TXB069
- $18.45 –
- Free Shipping

