• In Stock
  • Sold by Newegg
  • Make an Offer
  • New
  • Combo Deals Only
Department
Show More
Brands
Show More
Price
Show More
Sold by
All Top Brands
Availability
Condition
Current Promotion
Discount
Useful Links
Customer Ratings
avatar

Any questions? Our AI beta will help you find out quickly.

Sort By:
View:
USB 2.0 to Serial RS-232 DB9 9Pin Adapter Converter Cable Chipset Length 1M USB to RS232
Quick View
  •  
  • $71.99 
  • Free Shipping
Industrial USB 2.0 to RS-232 Serial High-Speed Adapter w/Mounting Flanges
Quick View
  •  
  • $83.99 
  • Free Shipping
StarTech.com 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub
Quick View
PCI Expansion Adapter Converter to RS232 Serial Port COM & Parallel Port DB25 Printer LPT Add On Card TXB086
Quick View
Direct from YEPLOOK Direct from YEPLOOK
USB to RS232 DB9 Serial Cable Converter Adapter with CH340 Chipset for Windows 10 with metal shell
Quick View
Direct from YEPLOOK Direct from YEPLOOK
PCIe Serial Card RS232 RS-232 serial Ports and Connectors COM Expansion card  with Chip AX99100B
Quick View
Direct from YEPLOOK Direct from YEPLOOK
SYBA 4 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SY-PEX15066
Quick View
SYBA 4 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SY-PEX15066
  • Type: RS-232 DB9 Serial M.2 B+M Key Controller Card
  • External Ports: 4 x Serial Ports
  • Internal Ports: 1 x M.2 B+M Key
  • Operating Systems Supported: Windows 7, 8, 10, Linux Kernal 2.6.15 , Android 1.x-5.x
  • Model #: SY-PEX15066
HL-340 USB to RS232 COM Port Serial PDA 9 pin DB9 Adapter Support Windows7-64
Quick View
  •  
  • $72.99 
  • Free Shipping
For PCI Slot Header Serial DB9 Pin With Parallel DB25 Pin Cable 28.5cm With Bracket For Parallel LPT Printer COM Serial
Quick View
  •  
  • $12.99 
  • Free Shipping
Direct from YEPLOOK Direct from YEPLOOK
PCI-E 2 RS232 serial COM Port Riser card 1 Printer parallel port card computer Adapter Converter TXB076
Quick View
  •  
  • $19.99 
  • Free Shipping
Direct from YEPLOOK Direct from YEPLOOK
Vszerda 2 Port DB9 RS-422/485 Serial PCI-Express 2.0 x1 Card (SI-PEX15043)
Quick View
Vszerda 2 Port DB9 RS-422/485 Serial PCI-Express 2.0 x1 Card (SI-PEX15043)

Limited time offer, ends 06/02

  • Model #: SI-PEX15043
  •  
  • $58.99 
  • Free Shipping
Gearmo 4 Port USB to Serial RS232 Adapter, 3ft Cable, FTDI Chipset, Supports Win 11, 10, 8, 7, Linux, Mac w/ESD and Surge Protection (USA-FTDI4X)
Quick View
Gearmo 4 Port USB to Serial RS232 Adapter, 3ft Cable, FTDI Chipset, Supports Win 11, 10, 8, 7, Linux, Mac w/ESD and Surge Protection (USA-FTDI4X)
  • Color: Black
  • Ports: 4 x Serial
  • Transfer Rate: 921.6 Kbps
  • Dimensions: 8" L x 6" W x 2" H
  • Model #: USBG-4X2FTDI
  •  
  • $49.67 
  • $3.99 Shipping
Direct from GearMo Direct from GearMo
Syba 8 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SI-ADA15071
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
StarTech.com PEX2S953LP 2 Port RS232 Serial Adapter Card with 16950 UART - PCI Express Serial Port Card - 921.4Kbps - Windows & Linux Compatible
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
Gearmo Windows 7 64-bit Compatible USB to Serial Adapter RS232 DB9 Short 8 Inch Cable
Quick View
  •  
  • $20.64 
  • $3.99 Shipping
Direct from GearMo Direct from GearMo
PCI Expansion Card Adapter Converter to Dual RS232 RS-232 Serial Ports COM & DB25 Printer Parallel Port LPT TXB087
Quick View
  •  
  • $20.99 
  • Free Shipping
Direct from YEPLOOK Direct from YEPLOOK
StarTech Dual-Port PCI Express to DB9 Serial Card 2S232422485-PC-CARD
Quick View
StarTech Dual-Port PCI Express to DB9 Serial Card 2S232422485-PC-CARD
  • Type: PCI Express to Serial Port Card
  • Model #:
PCI Serial Port Card PCI To 2 Ports RS232 COM Converter Card
Quick View
PCI Serial Port Card PCI To 2 Ports RS232 COM Converter Card

Limited time offer, ends 05/23

  • Type: Controller Card
  • Model #: CL-HD-Addon-116
PCIe to Dual Serial Port DB9 RS232 COM+ Single DB25 Parallel Port Printer LPT Adapter Card Chipset ASIX/AX99100 for PC Desktop
Quick View
  •  
  • $16.99 
  • Free Shipping
Direct from YEPLOOK Direct from YEPLOOK
Dell W4827 250-Watt PFC Dual Serial ATA Mainstream Power Supply
Quick View
  •  
  • $150.00 
  • Free Shipping
SIIG PCIe board with 1 serial (RS-232) and parallel (DB25) port Model JJ-E00011-S3 - OEM
Quick View
SIIG PCIe board with 1 serial (RS-232) and parallel (DB25) port Model JJ-E00011-S3 - OEM
  • Type: PCI Express to Parallel / Serial Port
  • External Ports: 1 x Serial Ports + 1 x Parallel Port
  • Operating Systems Supported: Windows 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit) / Server 2003 & 2008 (32-/64-bit) / 2000
  • Package Contents: Cyber 1S1P PCIe adapter Driver CD Installation guide
  • Model #: JJ-E00011-S3
  •  
  • $30.00 
  • Free Shipping
PCI-E 1X to 4 ports Serial add on card Multi RS232 DB9 COM Serial Expansion I/O riser card TXB077
Quick View
  •  
  • $32.99 
  • Free Shipping
Direct from YEPLOOK Direct from YEPLOOK
SYBA PCI to Serial 2-port host controller card Model SD-PCI-2S
Quick View
SYBA PCI to Serial 2-port host controller card Model SD-PCI-2S

Limited time offer, ends 05/13

  • 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
  • $22.09 - $23.49