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Serial Converters/Repeaters/Isolators (325)

Reliable serial communication
Choose serial converters, repeaters and isolators by interface, port count, baud rate, isolation, connector, DIN format, drivers and cable length

DistriNode serial converters, repeaters and isolators connect legacy devices, PLCs, meters, POS terminals, access control, CNC machines, routers, servers and industrial controllers wherever RS-232, RS-422, RS-485, USB or Ethernet must run reliably. Compare USB serial adapters, multiport converters, long-distance repeaters, optically isolated interfaces, surge protection, screw terminals, DB9, DIN enclosures, Windows and Linux drivers, Modbus, half-duplex and full-duplex.

324 products61 brandsUSB -> RS-485Via official distributors

How to choose serial converters

Match the standard
RS-232, RS-422 and RS-485 use different wiring and signals.
Check isolation
Optical isolation protects against ground loops and industrial interference.
Plan for drivers
Service laptops and servers may need specific chipset support.
Mind the distance
Repeaters and termination stabilise long RS-485 runs.

What you will find here

USB serial adaptersRS-232 convertersRS-485 repeatersSerial isolatorsRS-422 adaptersDIN convertersDB9 adaptersModbus interfacesMultiport serial cardsIndustrial serial links

Key serial brands

DELOCKMOXAStarTechEXSYSROLINEATENDIGITUSMANHATTANLINDYINLINERENKFORCEEQUIPUNITEKACTLOGILINKMICROCONNECTWENTRONICAXAGON
Integration tip: Before replacing a device, note down its standard, connector, baud rate and wiring mode.

Frequently asked questions

Can RS-232 and RS-485 be connected directly?
No, you need a suitable converter for that.
When do you need isolation?
With different power supplies or electrical interference.
Why do some USB serial adapters not work with legacy devices?
Drivers, signal levels or handshake lines may differ.
Brand: StarTech Stock: 79
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 1 Port Connector A DB9
46.82 €
Ex Tax:39.67 €
5 suppliers Reward +0,14 €
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Brand: DIGITUS Stock: 8
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B Serial Port
19.17 €
Ex Tax:16.25 €
7 suppliers Reward +0,05 €
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Brand: UNITEK Stock: 2
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B DB9
19.46 €
Ex Tax:16.49 €
2 suppliers Reward +0,05 €
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Brand: LINDY Stock: 26
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
15.27 €
Ex Tax:12.94 €
8 suppliers
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Brand: ROLINE Stock: 87
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B Serial Port
58.55 €
Ex Tax:49.62 €
3 suppliers Reward +0,19 €
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Brand: VALUE Stock: 200
Interface Type USB-C Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector A DB9
32.22 €
Ex Tax:27.31 €
3 suppliers Reward +0,09 €
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Brand: EXSYS Stock: 2
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B Serial Port
146.66 €
Ex Tax:124.29 €
2 suppliers Reward +0,53 €
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DIGITUS USB 2.0 to 4x RS232 Cable 1.5m DIGITUS USB 2.0 to 4x RS232 Cable 1.5m
60 mo.
Brand: DIGITUS Stock: 4
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 4 Ports Connector B Serial Port
47.99 €
Ex Tax:40.67 €
9 suppliers Reward +0,15 €
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Brand: DIGITUS Stock: 3
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
12.11 €
Ex Tax:10.26 €
9 suppliers
Buy
Brand: LOGILINK Stock: 30
21.07 €
Ex Tax:17.85 €
4 suppliers Reward +0,06 €
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Brand: GEMBIRD Stock: 50
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B DB9
8.69 €
Ex Tax:7.36 €
5 suppliers
Buy
DIGITUS USB 2.0 to Serial Converter DSUB 9M incl. USB-A Cable 80cm FTDI Chipset USB 2.0 to RS232 (FT232RL) DIGITUS USB 2.0 to Serial Converter DSUB 9M incl. USB-A Cable 80cm FTDI Chipset USB 2.0 to RS232 (FT232RL)
60 mo.
Brand: Assmann Stock: 30
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
16.01 €
Ex Tax:13.57 €
12 suppliers
Buy
Brand: DELOCK Stock: 500
Interface Type USB-C Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B RJ45
41.05 €
Ex Tax:34.78 €
5 suppliers Reward +0,13 €
Buy
Brand: DELOCK Stock: 3
Interface Type USB-C Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
20.51 €
Ex Tax:17.38 €
3 suppliers Reward +0,06 €
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Brand: DIGITUS Stock: 2
Interface Type Serial Product Type Serial Protocol Converter Number of Po... 1 Port Connector A DB9
11.75 €
Ex Tax:9.96 €
4 suppliers
Buy
Techly IDATA USB-SER-2T USB to Serial Adapter, USB-A Plug to DB-9 Plug, 0.45 m, Transparent White Techly IDATA USB-SER-2T USB to Serial Adapter, USB-A Plug to DB-9 Plug, 0.45 m, Transparent White
36 mo.
Brand: TECHLY Stock: 7
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B DB9
18.54 €
Ex Tax:15.71 €
4 suppliers Reward +0,05 €
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Brand: DELOCK Stock: 500
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
31.20 €
Ex Tax:26.44 €
5 suppliers Reward +0,09 €
Buy
Brand: INLINE Stock: 253
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 2 Ports Connector A DB9
29.34 €
Ex Tax:24.86 €
4 suppliers Reward +0,08 €
Buy
Axagon ADS-1PQN USB-A 2.0 - Serial RS-232 DB9-M FTDI Adapter Cable Axagon ADS-1PQN USB-A 2.0 - Serial RS-232 DB9-M FTDI Adapter Cable
36 mo.
Brand: AXAGON Stock: 5
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
17.24 €
Ex Tax:14.61 €
6 suppliers Reward +0,05 €
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Brand: ROLINE Stock: 24
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
155.94 €
Ex Tax:132.16 €
3 suppliers Reward +0,57 €
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Brand: CRADLEPOINT Stock: 500
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B Serial Port
93.44 €
Ex Tax:79.19 €
2 suppliers Reward +0,32 €
Buy
Brand: DELOCK Stock: 5
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B DB9
15.73 €
Ex Tax:13.33 €
3 suppliers
Buy
Brand: TRENDNET Stock: 5
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
15.23 €
Ex Tax:12.91 €
5 suppliers
Buy
Brand: EXSYS Stock: 1
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
91.01 €
Ex Tax:77.12 €
1 supplier Reward +0,31 €
Buy
Brand: LOGILINK Stock: 8
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
14.57 €
Ex Tax:12.35 €
5 suppliers
Buy
Brand: StarTech Stock: 11
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 1 Port Connector B DB9
39.16 €
Ex Tax:33.19 €
4 suppliers Reward +0,12 €
Buy
Brand: StarTech Stock: 140
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 1 Port Connector B DB9
29.38 €
Ex Tax:24.90 €
6 suppliers Reward +0,08 €
Buy
Brand: StarTech Stock: 8
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 1 Port Connector A DB9
84.84 €
Ex Tax:71.90 €
4 suppliers Reward +0,28 €
Buy
Brand: EXSYS Stock: 5
Interface Type USB Type-B Product Type USB-to-Serial Adapter Number of Po... 4 Ports Connector B Serial Port
126.68 €
Ex Tax:107.35 €
2 suppliers Reward +0,45 €
Buy
Brand: DELOCK Stock: 93
Product Type Serial Protocol Converter Connector B RJ45 Primary Seri... RS-232 / RS-422 / RS-485 Isolation & ... Yes
77.22 €
Ex Tax:65.44 €
2 suppliers Reward +0,26 €
Buy
Brand: EXSYS Stock: 5
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 2 Ports Connector B Serial Port
83.11 €
Ex Tax:70.44 €
2 suppliers Reward +0,28 €
Buy
Brand: EXSYS Stock: 13
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B Terminal Block
41.16 €
Ex Tax:34.88 €
2 suppliers Reward +0,12 €
Buy
Brand: EXSYS Stock: 2
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B Serial Port
175.45 €
Ex Tax:148.69 €
2 suppliers Reward +0,64 €
Buy
Brand: EXSYS Stock: 6
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
90.63 €
Ex Tax:76.81 €
2 suppliers Reward +0,31 €
Buy
Brand: REBEL Stock: 3
12.23 €
Ex Tax:10.36 €
1 supplier
Buy
Brand: HP Stock: 3
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector A DB9
33.72 €
Ex Tax:28.58 €
6 suppliers Reward +0,10 €
Buy
Brand: HPE Stock: 12
Interface Type USB Type-A Product Type TTL Serial Converter Number of Po... 1 Port Connector B Serial Port
33.83 €
Ex Tax:28.67 €
2 suppliers Reward +0,10 €
Buy
Brand: StarTech Stock: 50
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 2 Ports Connector B Serial Port
88.00 €
Ex Tax:74.58 €
5 suppliers Reward +0,30 €
Buy
Brand: EXSYS Stock: 12
Interface Type Serial Primary Seri... RS-232
110.31 €
Ex Tax:93.48 €
1 supplier Reward +0,39 €
Buy
Brand: StarTech Stock: 20
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 2 Ports Connector B Serial Port
78.89 €
Ex Tax:66.85 €
5 suppliers Reward +0,26 €
Buy
Brand: StarTech Stock: 38
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 8 Ports Connector B DB9
218.31 €
Ex Tax:185.01 €
5 suppliers Reward +0,81 €
Buy
Brand: EXSYS Stock: 12
Interface Type Serial Connector B Serial Port Primary Seri... RS-232
61.00 €
Ex Tax:51.70 €
1 supplier Reward +0,20 €
Buy
Brand: ABUS Stock: 8
Interface Type Serial Connector B DB9 Primary Seri... Serial
55.06 €
Ex Tax:46.66 €
1 supplier Reward +0,18 €
Buy
Brand: DIGITUS Stock: 14
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
13.95 €
Ex Tax:11.83 €
10 suppliers
Buy
Brand: LINDY Stock: 4
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
50.82 €
Ex Tax:43.07 €
2 suppliers Reward +0,16 €
Buy
Brand: REALPOWER Stock: 14
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 8 Ports Connector B Serial Port
232.45 €
Ex Tax:196.99 €
3 suppliers Reward +0,78 €
Buy
Brand: EQUIP Stock: 500
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B DB9
17.34 €
Ex Tax:14.70 €
2 suppliers Reward +0,05 €
Buy
Brand: DELOCK Stock: 80
Connector B DB9 Connector A DB9
32.04 €
Ex Tax:27.16 €
2 suppliers Reward +0,09 €
Buy
Brand: DELOCK Stock: 2
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 4 Ports Connector B DB9
84.57 €
Ex Tax:71.67 €
1 supplier Reward +0,28 €
Buy
Brand: DELOCK Stock: 79
Interface Type USB Type-A Product Type TTL Serial Converter Number of Po... 1 Port Connector A 3.5 mm Audio
29.28 €
Ex Tax:24.81 €
2 suppliers Reward +0,08 €
Buy
Showing 1 to 50 of 324 (7 Pages)
Seller: UAB KUR LT · Laisvės pr. 125A, LT-06118 Vilnius, Lithuania · Company code 303192950 · VAT number LT100008198612 · Ships from the EU (Lithuania)
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