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Interworld Electronics offers a wide range of Asynchronous and Synchronous Serial Communication Boards and Adapters with the following popular protocols, RS-232, RS-422 and RS-485. Our Serial Communication Boards range from single port to eight ports on a single device, with some devices also having optical isolation which ensures effective data transmission over long communication lines, even in electrically noisy environments. Our solutions with the RS-422 and RS-485 protocols are ideal for industrial applications requiring longer cable runs (up to 4,000 feet).

Interworld’s range covers all major bus architectures including Universal PCI, PCI-Express, mini-PCIe, M.2 and USB. In addition, Interworld offers a range of external serial adapters for RS-232 to RS-422/485 conversion, serial isolators for protecting communications equipment and repeaters for increasing the number of nodes connected to a network. Take a look at the full list of products below, or visit one of the sub-category links to learn more.

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Communications 104e-mPCIe-x Product Image 1
104e-mPCIe-x

PCI Express Mini Card (mPCIe) Carrier Board for 104-Express Stacks

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications 104e-mPCIe-xA Product Image 2
104e-mPCIe-xA

Advanced PCI Express Mini Card (mPCIe) Carrier Board for 104-Express Stacks

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications 232OPDR Product Image 3
232OPDR

RS-232 Optically Isolated Repeater, DIN Mount

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Isolators / Repeaters']
Communications 485OPDRI Product Image 4
485OPDRI

RS-485/422 Isolated Repeater, DIN Mount

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Isolators / Repeaters']
Communications 4WSD9OTB Product Image 5
4WSD9OTB

RS-232 to RS-422/485 optically isolated converter

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Converters / Isolated Converters']
Communications 9POP4 Product Image 6
9POP4

Four Line RS-232 Isolator, 9 Pin

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Isolators / Repeaters']
Communications 9SPOP2 Product Image 7
9SPOP2

Port-Powered RS-232 Isolator, 9 Pin

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Isolators / Repeaters']
Communications CONV232/422 Product Image 8
CONV232/422

(CONV422/DB9) DB9 RS232 to RS422/485 4 wire Converter

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Converters / Isolated Converters']
Communications CONV232/485 Product Image 9
CONV232/485

Serial RS232 to RS485 Converter

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Converters / Isolated Converters']
Communications FASTCOMFSCC/4-PCIe Product Image 10
FASTCOMFSCC/4-PCIe

PCIe Bus Synchronous Four Port RS422/RS485 Communications Adapter

['Products', 'Communications', 'Synchronous Serial Adapters']
Communications LPCIE-ACBULTRA Product Image 11
LPCIE-ACBULTRA

Low Profile PCI Express 1-Port RS-232, RS-422, RS-485, RS-530, RS-530A, V.35 Synchronous Serial Interface

['Products', 'Communications', 'Synchronous Serial Adapters']
Communications M.2 COM-4SM Series Product Image 12
M.2 COM-4SM Series

M.2 COM-4SM Series of 2 & 4 Port RS-232 / 422 / 485 M.2 Cards

['Products', 'Communications', 'Communication Boards', 'M.2 Serial Communications']
Communications M.2 ICM-232 Series Product Image 13
M.2 ICM-232 Series

M.2-ICM232 Two, & Four Port Isolated RS232 M.2 Cards

['Products', 'Communications', 'Communication Boards', 'M.2 Serial Communications']
Communications M.2 ICM-422 Series Product Image 14
M.2 ICM-422 Series

M.2-ICM422 One, Two, & Four Port Isolated RS422 M.2 Cards

['Products', 'Communications', 'Communication Boards', 'M.2 Serial Communications']
Communications M.2 ICM-485 Series Product Image 15
M.2 ICM-485 Series

M.2-ICM485-4 One, Two, & Four Port Isolated RS485 M.2 Cards

['Products', 'Communications', 'Communication Boards', 'M.2 Serial Communications']
Communications MPCIe-ICM485 Series Product Image 16
MPCIe-ICM485 Series

Four, Two, and Single-port Isolated RS485 PCI Express Mini Cards

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications PCIE-COM-4SM-L Product Image 17
PCIE-COM-4SM-L

PCI Express 4 Port RS-232/422/485 Low Profile Serial Communication Card

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM-8SM-L Product Image 18
PCIE-COM-8SM-L

PCI Express 8 Port RS-232/422/485 Low Profile Serial Communication Card

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM232-2RJ/DB Product Image 19
PCIE-COM232-2RJ/DB

PCI Express 2 Port RS-232 Serial Communication Cards, RJ45 or DB9 Connectors

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM232-4-L Product Image 20
PCIE-COM232-4-L

Low Profile PCI Express, 4 Port RS-232 Serial Communication Cards

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM232-4RJ/DB Product Image 21
PCIE-COM232-4RJ/DB

PCI Express 4 Port RS-232 Serial Communication Cards, RJ45 or DB9 Connectors

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM232-8-L Product Image 22
PCIE-COM232-8-L

Low Profile PCI Express, 8 Port RS-232 Serial Communication Cards

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM422-4-L Product Image 23
PCIE-COM422-4-L

PCI Express 4 Port RS-422 Low Profile Serial Communication Card

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM422-8-L Product Image 24
PCIE-COM422-8-L

PCI Express 8 Port RS-422 Low Profile Serial Communication Card

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM485-4-L Product Image 25
PCIE-COM485-4-L

PCI Express 4 Port RS-485 Low Profile Serial Communication Card

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-COM485-8-L Product Image 26
PCIE-COM485-8-L

PCI Express 8 Port RS-485 Low Profile Serial Communication Card

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-ICM-4SM Series Product Image 27
PCIE-ICM-4SM Series

PCI Express Isolated 4 and 2-Port PCI Express RS-232/422/485 Serial Communication Cards

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIE-ICM232 Series Product Image 28
PCIE-ICM232 Series

PCI Express Isolated 4 and 2-Port PCI Express RS-232 Serial Communication Cards

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIe-COM-2SMRJ/DB Product Image 29
PCIe-COM-2SMRJ/DB

PCI Express 2 Port RS-232/422/485 Multi-Protocol Serial Cards, RJ45 or DB9 Connectors

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications PCIe-COM-4SMRJ/DB Product Image 30
PCIe-COM-4SMRJ/DB

PCI Express 4 Port RS-232/422/485 Multi-Protocol Serial Cards, RJ45 or DB9 Connectors

['Products', 'Communications', 'Communication Boards', 'PCI-Express Serial Communications']
Communications ST-C5RS-LC Product Image 31
ST-C5RS-LC

CAT5 RS-232 Extender - Up To 1200 Metres

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Serial Extenders']
Communications ST-POE-WTP Product Image 32
ST-POE-WTP

Waterproof Gigabit Power over Ethernet (POE) Extender

['Products', 'Communications', 'Converters / Extenders / Isolators / Surge Protect', 'Ethernet Extenders']
Communications SUPERFSCC/4-PCIe Product Image 33
SUPERFSCC/4-PCIe

PCIe Bus Synchronous Four Port RS422/RS485 Communications Adapter w/DMA

['Products', 'Communications', 'Synchronous Serial Adapters']
Communications SUPERFSCC/4-PCIe-LVDS Product Image 34
SUPERFSCC/4-PCIe-LVDS

PCIe Bus Synchronous Four Port LVDS/RS644 Communications Adapter w/DMA

['Products', 'Communications', 'Synchronous Serial Adapters']
Communications Sync Com Series Product Image 35
Sync Com Series

USB Synchronous RS232/RS422/RS485/LVDS Serial Adapter

['Products', 'Communications', 'Synchronous Serial Adapters']
Communications USB-232-IND Product Image 36
USB-232-IND

Rugged, Industrial Strength, Single port USB to RS-232 serial adapter

['Products', 'Communications', 'USB Serial Adapters']
Communications USB-422-485-IND Product Image 37
USB-422-485-IND

Rugged, Industrial Strength, Single Port USB to RS-422/485 Serial Converter with Extended Temperature Operation

['Products', 'Communications', 'USB Serial Adapters']
Communications USB-422-IND Product Image 38
USB-422-IND

Rugged, Industrial Strength, Single Port RS-422 to USB Converter, 4-Wire, Full Duplex

['Products', 'Communications', 'USB Serial Adapters']
Communications USB-485-IND Product Image 39
USB-485-IND

Rugged, Industrial Strength, Single Port RS-485 to USB Converter, 2-Wire, Half Duplex, No Echo

['Products', 'Communications', 'USB Serial Adapters']
Communications USB-COM-2SM Product Image 40
USB-COM-2SM

Two-Port USB to Serial RS-232/422/485 Adapter

['Products', 'Communications', 'USB Serial Adapters']
Communications USB-FLEXCOM4 Product Image 41
USB-FLEXCOM4

USB to Four RS232/422/485 Ports

['Products', 'Communications', 'USB Serial Adapters']
Communications mPCIe-COM-2SM Series Product Image 42
mPCIe-COM-2SM Series

Two Port Multi-Protocol RS-232/422/485 PCI Express Mini Card

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications mPCIe-COM-4SM Series Product Image 43
mPCIe-COM-4SM Series

Four Port Multi-Protocol RS-232/422/485 PCI Express Mini Card

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications mPCIe-COM232-2 Product Image 44
mPCIe-COM232-2

2-port RS-232 PCI Express Mini Card

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications mPCIe-COM232-4 Product Image 45
mPCIe-COM232-4

4-port RS-232 PCI Express Mini Card

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications mPCIe-ICM232 Series Product Image 46
mPCIe-ICM232 Series

Two and Four port isolated RS232 PCI Express Mini Card

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']
Communications mPCIe-ICM422 Series Product Image 47
mPCIe-ICM422 Series

Four, Two, and Single-port Isolated RS422 PCI Express Mini Cards

['Products', 'Communications', 'Communication Boards', 'Mini PCIe Serial Communications']