Your Browsing History
- In Stock
- Sold by Newegg
- Make an Offer
- New
Any questions? Our AI beta will help you find out quickly.
Try me now

Quick View
PCI to 2 Ports RS232 Serial Port COM DB9 9Pin Serial Card Expansion Controller Adapter Chipset ASIX/AX9865 for Desktop Computer
- Model #: ooc-0140494
- $24.70 –
- Free Shipping

Quick View
USB to 4-Port Independent RS-485/RS-232 Converter RS485 RS232 COM Serial Port Adapter Cable
- Model #: TOLKB0H1BZ3Q1B
- $275.99 –
- Free Shipping

Quick View
LinksTek 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)
Limited time offer, ends 07/26
- Model #: 386044942705
- $50.48 –
- More options from $50.48 - $55.99
- Free Shipping

Quick View
StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 Model PEX4S232485
- Type: PCI Express to Serial Port Card
- External Ports: 2 x RS232 2 x RS422 / RS485
- Operating Systems Supported: Windows 8 (32/64bit), 7 (32/64), Vista(32/64), XP(32/64), 2000 Windows Server 2008 R2, 2003(32/64) Linux Kernel 2.6.x
- Specifications: Data Bits: 5, 6, 7, 8 FIFO: 256 Bytes Flow Control: None, Xon/Xoff, RTS/CTS Max Baud Rate: 460.8 Kbps Parity: None, Odd, Even, Space, Mark Serial Protocol: RS-232/422/485 Stop Bits: 1, 1.5, 2 Supported Protocols: RS-232, RS-422, RS-485 2-wire / 4-wire
- Model #: PEX4S232485
- $153.74
- $150.38 –
- More options from $150.38 - $163.78

Quick View
PCI-E Serial Port Card PCIe to 4/2 Port RS232, Industrial 4/2 x 9-Pin COM Expansion Card, ASIX AX99100 Two wires
- Model #: C7FW0626-JIA-82
- $24.98 –
- Free Shipping

Quick View
DTECH 6 Feet USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac
- Model #: VFR-1715
- $44.32 –
- Free Shipping

Quick View
Aomoproing 4 DB-9 serial rs232 ports pcie controller card with 1 TTL port with fan-out cable
- Model #: oo-500
- $70.58 –
- Free Shipping

Quick View
SYBA PCI to Serial 2-port host controller card Model SD-PCI-2S
- Type: PCI to Serial Port Card
- External Ports: 2x DB9 serial port connectors
- Operating Systems Supported: Windows 98SE/ME/2000/XP/NT4.0, Linux & DOS Operating System
- Weight: 0.4
- Model #: SD-PCI-2S
- $24.48 –
- More options from $19.50 - $24.48
- Free Shipping

Quick View
Syba SY-PEX15019 PCI-Express RS-232 Serial 8-Port Card with OXPCIe958 Chipset
- Model #: TOLDB003BYRO8S
- $109.99 –
- Free Shipping

Quick View
Vszerda FOR 2 Port RS232 RS-232 Serial Port COM to PCI-E PCI Express Card Adapter Converter AX99100 Chipset
Limited time offer, ends 08/18
- Model #: 48G9DR
- $30.49 –
- Free Shipping

Quick View
Rs485 serial port server conwerted to Ethernet Tcp/ip industrial internet of Things communication sernver with Modbus communication capabiltly
- Model #: C075.410
- $49.19 –
- Free Shipping

Quick View
4G LTE LTE-FDD WCDMA GSM E840-TTL(4G02-DNE) IPX Interface TTL UART Wireless Transceiver Serial Port to Server Bidirectional Module
- Model #: TOLKB0C7Q1L665
- $102.99 –
- Free Shipping

Quick View
FOR USB Serial Port CH340 CP2102 to TTL/ RS485/ RS232 Full Interoperability
- Model #: 6957133194202
- $34.99 –
- Free Shipping

Quick View
PCIe Serial and Parallel Port Card Desktop PCI-E 1 and 2 Serial Port Card Built-in 2S1P COM Serial Parallel Port Card
- Model #: C72J-Y-1819-2IN1
- $27.28 –
- Free Shipping

Quick View
PCIe Serial and Parallel Port Card Desktop PCI-E 1 and 2 Serial Port Card Built-in 2S1P COM Serial Parallel Port Card
- Model #: C7FW0629-JIA-773
- $26.27 –
- Free Shipping

Quick View
StarTech.com PEX2S953LP 2 Port RS232 Serial Adapter Card with 16950 UART - PCI Express Serial Port Card - 921.4Kbps - Windows & Linux Compatible
- Type: PCI Express to Serial Port Card
- External Ports: 2 x DB-9 (9 pin, D-Sub) Male
- Internal Ports: 1 x LP4 (4 pin; Large Drive Power) Male Input 1 x PCI Express x1 Male
- Operating Systems Supported: Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.4.x to 2.6.x LTS Versions only
- Model #: PEX2S953LP
- $55.99
- $45.99 –
- Save: $10.00 (17%)
- More options from $45.99 - $61.11
- $7.05 Shipping

Quick View
StarTech.com ICUSB2324852 USB to Serial Adapter - 2 Port - RS232 RS422 RS485 - COM Port Retention - FTDI USB to Serial Adapter - USB Serial
- Color: Black
- Changer Type: USB to DB9 (RS-232)
- Specifications: Color: Gray Humidity: 5% to 95% RH Interface/Bridge: USB 2.0 Number of Ports: 2 Operating Temperature: 0°C to 55°C (32°F to 131°F) Storage Temperature: -20°C to 85°C (-4°F to 185°F) Max Baud Rate: 921.6Kbps Data Bits: 7, 8 Stop Bits: 1 and 2 Parity: Odd, Even, Mark, Space, and None Flow Control: Xon/Xoff, Hardware, and None LED Indicators: 1 - Red - Power LED Bus Type: USB 2.0 Connector Types: 1 - DB9 Male Connector Types: 1 - Terminal Block Connector Types: 1 - USB B Female Power Adapter Included: Optional Output Voltage: 5 DC Output Current: 385mA Center Tip Polarity: Positive Plug Type: B OS Compatibility: Windows 98SE/ ME/ 2000/ XP(32/64bit)/ 2003(32/64bit)/ Vista(32/64bit)/ Server 2008(32/64bit)/ 7(32/64bit)/ Server 2008 R2, Mac 9.8/OS X, Linux 2.4.x and up; Wind...
- Model #: ICUSB2324852
- $116.20 –
- More options from $113.84 - $116.20

Quick View
Luxun usb to Serial Port Computer printer usb to rs232 serial port data cable db9 male-to-male serial port cable 2 meters
- Model #: Kepler-C72J-1084
- $48.99 –
- Free Shipping

Quick View
PCIe to Single Serial Port DB9 RS232 PCI-E x1 Serial Card Expansion Adapter Converter Chipset ASIX AX99100 for Desktop Computer
- Model #: DW-TXB073
- $13.99 –
- Free Shipping

Quick View
SYBA 3 Feet USB 2.0 to Serial DB9 Port RS-232 Prolific Chipset PL-2303 SY-ADA15006
- Type: Connector Adapter
- Color: Black
- Connector Number: 2
- Connector Detail: USB 1.1 to Serial DB9 Port RS232 Convertor Cable
- Model #: SY-ADA15006
- $13.51 –
- More options from $13.51 - $15.99
- Free Shipping

Quick View
StarTech.com PEX4S953LP 4-Port PCI Express RS232 Serial Adapter Card - 16950 UART - 256-byte FIFO Cache - ASIX AX99100 - Low Profile Bracket - Replacement for PEX4S952LP (PEX4S953LP)
- Type: PCI Express to Serial Port Card
- External Ports: 4 - DB-9 (9 pin, D-Sub) Male
- Internal Ports: 1 - LP4 (4 pin; Large Drive Power) Male Input
- Operating Systems Supported: Windows 7, 8, 8.1, 10 Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.4.x to 2.6.x LTS Versions only
- Model #: PEX4S953LP
- $109.99
- $103.99 –
- Save: $6.00 (5%)
- More options from $103.99 - $121.68
- $7.51 Shipping

Quick View
RS232 SP3232 TTL to RS232 Module RS232 to TTL Brush Line Serial Port Module New
- Model #: JC40E-0630-120
- $16.49 –
- Free Shipping

Quick View
Aomoproing PCIe to 2 PORTS RS-232 Serial Port COM & DB25 Printer Parallel port converter card WCH382L Chipset
- Model #: zo-1082
- $16.37 –
- Free Shipping

Quick View
1.2M USB 2.0 to RS485 RS-485 RS422 RS-422 DB9 COM Serial Port Device Converter Adapter Cable CH340+ZT485 Chipset
- Model #: DIEWUseries-90
- $20.99 –
- Free Shipping

Quick View
SYBA PCI-Express 2-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15022
- Type: PCI Express to Serial Port Card
- External Ports: 2 x Serial Ports
- Operating Systems Supported: Supports Windows 2000, XP 32/64-bit, Server 2003 32/64-bit, Vista 32/64-bit, Server 2008 32/64-bit
- Weight: 0.35
- Model #: SD-PEX15022
- $30.99
- $16.99 –
- Save: $14.00 (45%)
- Free Shipping

Quick View
USB to 4-Port Independent RS-485/RS-232 Converter RS485 RS232 COM Serial Port Adapter Cable
- Model #: DEEUB0GCHXMCQQ
- $272.99 –
- Free Shipping

Quick View
RS232 to TTL to UART serial port module/DB9 male/female/screw nut/bidirectional conversion cable
- Model #: love-157
- $22.71 –
- Free Shipping

Quick View
FOR PCI-E Serial Port Card Pcie to 4 Serial Port RS232 9-Pin Industrial Control 4-Port Expansion Card AX99100 with Cable
- Model #: SHQ-2715
- $27.63 –
- Free Shipping

Quick View
USB2.0 to RS-485 RS-422 DB9 pin female COM Serial Port chip PL2303 isolated USB to a RS485 USB rs485 RS422 adapter converter
- Model #: NVO3JRSW-279
- $31.14 –
- Free Shipping

Quick View
Syba 8 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SI-ADA15071
- Type: Controller Card
- External Ports: 8 x Serial Ports
- Operating Systems Supported: Windows 10 or Higher Ubuntu 19.04 or Higher
- Package Contents: 8 Port Serial DB9 M.2 B+M Key Module Driver CD x1 Manual x1
- Model #: SI-ADA15071
- $59.99
- $55.19 –
- Save: $4.80 (8%)
- More options from $55.19 - $81.47
- Free Shipping

Quick View
SYBA SY-PEX15019 RS-232 Serial 8-Port PCI-Express Card
- Type: PCI Express to Serial Port Card
- External Ports: 8 x Serial Ports
- Data Transfer Rate: Serial Port: Up to 1 Mbps
- Operating Systems Supported: Windows 2000, 2003 Server, XP 32/64-bit, Vista 32/64-bit
- Model #: SY-PEX15019
- $59.19 –
- More options from $59.19 - $84.20
- Free Shipping

Quick View
CP2102 USB to TTL UART 232 485 Port Mutual Convert Adapter USB Serial Port Adapter 6 in One Multi-Functional USB Serial Debug Tool for Windows Wince Linux Mac 32 64
- Model #: C783--WXY-70240184
- $31.99 –
- Free Shipping



