USB to RS-232 Serial Adapters

Professional USB to RS-232 Connectivity for Industrial Applications, Connect legacy DB9 serial devices to modern USB-A and USB-C systems with zero data loss. Coolgear’s industrial-grade RS-232 adapters are engineered for 24/7 reliability, featuring integrated COM Port Retention to keep your software linked through reboots and disconnects. Powered by genuine FTDI chipsets, our converters provide rock-solid driver stability and 15kV ESD surge protection to safeguard your PC and peripherals on the factory floor.

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	Name	Model No.	Baud Rate	Serial Ports	Upstream Ports	FIFO Receive	FIFO Transmit	MSRP	Quantity
	Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable	USBG-232MINI			N/A	128 bytes	256 bytes	$27.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	Dual-Port RS-232 to Ethernet Data Gateway TCP/IP Industrial Metal Case	MSD-SRF2XM			N/A			$197.99	Max: 18 Min: 1 Step: 1	Add to cart	Learn More
	4 Port RS-232 USB to Serial Adapter w/ Optical Isolation & Surge Protection	CM-41042			N/A	512 bytes	512 bytes	$287.29	Max: 4 Min: 1 Step: 1	Add to cart	Learn More
	Single Port RS-232 USB to Serial Adapter w/ Optical Isolation & Surge Protection	USBG-COM-SI-M			N/A	512 bytes	512 bytes	$114.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	4-Port USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & FTDI Chipset	USB2-4COM-M			N/A	384 bytes	128 bytes	$117.49	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB 2.0 to RS-232 / RS-422 / RS-485 Selectable Industrial Serial Adapter w/ 15kV ESD Surge Protection	USBG-COMi-M			N/A	512 bytes	512 bytes	$87.49	Max: 144 Min: 1 Step: 1	Add to cart	Learn More
	8 Port USB to RS-232/422/485 Octal Adapter	USB-8COMi-RM			N/A	384 bytes	128 bytes	$439.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	16 Port USB to RS-232 422/485 Metal Serial Adapter DIN-Rail Mount	USB-16COMi-RM			N/A	384 bytes	128 bytes	$758.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	32 Port RS-232 USB-to-Serial Adapter	USB-32COM-RM			N/A	2,000 bytes	2,000 bytes	$706.49	Max: Min: 1 Step: 1	Add to cart	Learn More
	16 Port RS-232 Rack Mountable USB to Serial Adapter	USB-16COM-RM			N/A	384 bytes	128 bytes	$491.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	Dual Port USB 2.0 to RS-232 DB-9 Serial Adapter w/ FTDI Chip	XC-232-C			N/A	4096 bytes	4096 bytes	$68.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	Single Port Industrial Adapter USB 2.0 to RS-232 / 422 / 485 w/ FTDI Chip	USB-COMiPLUS			N/A	384 bytes	128 bytes	$70.49	Max: Min: 1 Step: 1	Add to cart	Learn More
	2-Port USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV Surge Protection & 3 ft. USB Extension Cable	USBG-232FT-1			N/A	128 bytes	384 bytes	$52.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	2-Port USB 2.0 to RS-232 DB-9 Industrial Serial Adapter w/ 15kV ESD Surge Protection	USBG-2COM-M			N/A	128 bytes	384 bytes	$103.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	Single Port High-Speed USB 2.0 to Serial RS-232 Industrial Adapter w/ FTDI Chipset	USBG-COM-M			N/A	512 bytes	512 bytes	$46.49	Max: 22 Min: 1 Step: 1	Add to cart	Learn More
	4-Port USB to RS232 Adapter FTDI Cable	CG-4X232FTDI			N/A			$103.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	Industrial 8-Port DB-9 RS232 to USB Adapter w/ISO and Surge Protection	CM-41082			N/A	512 bytes	512 bytes	$430.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB 4-Port Serial Adapter – USB 2.0 to DB-9 Port RS232 with FTDI CHIP	USBG-4X232P1			N/A			$133.29	Max: 11 Min: 1 Step: 1	Add to cart	Learn More
	6ft. USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & FTDI Chipset	USBG-232MM			N/A	512 bytes	512 bytes	$29.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	12in. USB 2.0 to RS-232 DB-9 High Speed Serial Adapter w/ Surge Protection & FTDI Chipset	USBG-RS232-F12			N/A	128 bytes	256 bytes	$22.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	72 Inch USB to DB-9 Serial High Speed Adapter with FTDI Chipset	USBG-RS232-F72			N/A	128 bytes	256 bytes	$34.29	Max: 152 Min: 1 Step: 1	Add to cart	Learn More
	72 Inch USB DB-9 Serial Hi-Speed Adapter – Prolific Chipset	USBG-RS232-P72			N/A			$33.99	Max: 336 Min: 1 Step: 1	Add to cart	Learn More
	4-Port RS-232 USB to Serial Adapter Data Control Box	USB-4COM			N/A	384 bytes	128 bytes	$116.29	Max: 9 Min: 1 Step: 1	Add to cart	Learn More
	16-Port Industrial RS232 to USB 2.0 Hi-Speed Serial Adapter	CG-16COM-MINI			N/A	512 bytes	512 bytes	$422.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	Rugged Industrial 8-Port Terminal Block RS232/422/485 to USB Adapter	SA-8PXTB			N/A	128 bytes	128 bytes	$358.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB to Industrial 5Volt RS232 Serial Adapter FTDI	USB-COMPlus			N/A	384 bytes	128 bytes	$34.49	Max: Min: 1 Step: 1	Add to cart	Learn More
	4-Port RS-232 USB to Serial Adapter – Octopus Cable DIN Rail	USB2-4COM-M-CBL			N/A	384 bytes	128 bytes	$117.49	Max: 5 Min: 1 Step: 1	Add to cart	Learn More
	RS232/422/485 to USB 2.0 Serial Adapter Combo	CG-232485CBO			N/A			$106.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB to Serial RS-232 DB9 Adapter FTDI Chipset w/ 15kV ESD Protection, Windows 11 Support	USBG-232			N/A	512 bytes	512 bytes	$29.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB to RS232 TTL | CMOS Adapter Cable with Terminal Block	USB-232TTLMOS			N/A			$45.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB to RS-232 Isolated TTL | CMOS 5ft. Adapter Cable w/ TB	USB-232TTLMOS-IS			N/A			$58.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB 2 to Industrial 4-Port RS232-422-485 Serial TB Adapter	USB2-4COMi-TB			N/A	2k Bytes	2,000 bytes	$204.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	4-Port Industrial USB 2.0 to RS-232 / 422 / 485 Serial TB Adapter w/ Optical Isolation & Surge Protection	USB2-4COMi-SI-TB			N/A	2k Bytes	2,000 bytes	$269.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB2 to 8-Port RS232-422-485 Serial TB Adapter Isolation | Surge	USB2-8COMi-SI-TB			N/A	2k Bytes	2,000 bytes	$434.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB2 to 8-Port RS232-422-485 Serial TB Adapter	USB2-8COMi-TB			N/A	2k Bytes	2,000 bytes	$325.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB to Serial RJ45 Cable for Serial Console Ports	URJ4856FT			N/A			$27.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB C to RS-232 6FT Serial Adapter Black w/FTDI Chipset DB9 male	USBG-232MM-C			N/A	512 bytes	512 bytes	$29.49	Max: Min: 1 Step: 1	Add to cart	Learn More
	USB C to Serial FTDI Adapter Black for Windows 10 Fully Supported!	USBG-232-C			N/A	128 bytes		$27.29	Max: Min: 1 Step: 1	Add to cart	Learn More
	2 Port USB 2.0 to RS 232 Manual Switch FTDI Chipset	CG-2URS232M			N/A			$40.49	Max: 8 Min: 1 Step: 1	Add to cart	Learn More
	2 Port USB 2.0 to RS 232 Auto Switch FTDI Chipset	CG-2URS232A			N/A			$63.49	Max: 8 Min: 1 Step: 1	Add to cart	Learn More
	4 Port USB 2.0 to RS 232 Manual Switch FTDI Chipset	CG-4URS232M			N/A			$52.29	Max: 10 Min: 1 Step: 1	Add to cart	Learn More
	4 Port USB 2.0 to RS 232 Auto Switch FTDI Chipset	CG-4URS232A			N/A			$81.29	Max: 10 Min: 1 Step: 1	Add to cart	Learn More
	1-Port USB to Serial Adapter (RS-232/422/485) , DIN-rail	USB-COMi-PRO			N/A	512 bytes	512 bytes	$107.99	Max: Min: 1 Step: 1	Add to cart	Learn More
	RS-232 / RS-422 / RS-485 to USB 2.0 Adapter w/ Isolation & Surge Protection	CG-USBISOCOM-PRO			N/A			$142.49	Max: 2 Min: 1 Step: 1	Add to cart	Learn More
	2-Port USB 2.0 to RS-232 DB-9 Industrial Serial Adapter w/ 25kV ESD & 2kV Optical Isolation Protection	USB-2COM-SI-M			N/A	256 bytes	128 bytes	$157.99	Max: Min: 1 Step: 1	Add to cart	Learn More