Serial Converters & Extenders

Serial converters and extenders are useful pieces of hardware designed to transfer data from a host computer to peripheral devices. Sometimes this involves a single cable to transfer data, for more specialist reasons, hubs are used to connect multiple serial outputs. Extenders stretch and maintain transfer rates over longer than normal distances.

How do serial converters work?

Whether the converter has a 9-pin or 25-pin connection, each pin has a specific job to allow data to be transferred. Serial connections work by transferring one byte of data at a time sequentially and are preceded with a start bit ’0’ and proceeded with a stop bit. This is in contrast with parallel connection where multiple bits of data can be transferred at the same time.

How do you use a serial converter?

Most common applications of COM ports are in point of sale systems (cash registers, bar code scanners etc.) and some medical equipment. Using a single cable to connect these devices is simple, plug one end into the host computer and the other into the peripheral device. If using a hub, software is usually needed to be downloaded before connecting any appliances.

What types are of serial converters and extenders are there?

Serial converters have been an integral part of computing for 20 years and so a lot of serial devices like modems and printers, which are perfectly functionable, remain with these older connection types.

New types of connections have been developed and an adapter usually has a USB end to connect to modern computers. They're commonly referred to as USB-to-Serial.

Serial connections can be split into two categories; serial connectors and serial ports. The most common types are listed below:

Serial ports:

  • RS-485
  • RS-422
  • RS-232
  • LIN (Local Interface Network)
  • SPI (Serial Peripheral Interface)
  • I2C
  • I2S
  • SMBus

Serial connectors:

  • 9-pin DB-9
  • 25-pin DB-25

RS Components feature a generous range of video converters, supplied by leading brands such as StarTech, FTDI Chip, and of course our trusted own brand RS Pro.


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Description Price Input Port Bus Type Output Port Number of Ports Maximum Baud Rate
RS庫存編號 760-8711
製造零件編號CHIPI-X10
BrandFTDI Chip
TWD654.00
單位
- - - - -
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製造零件編號ICUSB232DB25
TWD625.00
單位
- - - - -
RS庫存編號 429-252
製造零件編號UC232R-10
BrandFTDI Chip
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USB - RS232 - -
RS庫存編號 877-7240
製造零件編號US-235
BrandBrainboxes
TWD1,728.00
單位
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RS庫存編號 687-7806
製造零件編號US232R-100-BLK
BrandFTDI Chip
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RS庫存編號 784-0091
BrandRS PRO
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製造零件編號USB-RS485-WE-1800-BT
BrandFTDI Chip
TWD1,239.00
單位
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製造零件編號US-324
BrandBrainboxes
TWD2,049.00
單位
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RS庫存編號 429-274
製造零件編號US232R-10
BrandFTDI Chip
TWD964.00
單位
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RS庫存編號 703-3243
製造零件編號US-257
BrandBrainboxes
TWD5,997.00
單位
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製造零件編號US-101
BrandBrainboxes
TWD1,631.00
單位
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RS庫存編號 730-0164
製造零件編號USB-RS485-WE-5000-BT
BrandFTDI Chip
TWD1,753.00
單位
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製造零件編號12.02.1005
BrandRoline
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製造零件編號US-320
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TWD2,467.00
單位
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RS庫存編號 777-924
BrandRoline
TWD2,921.00
單位
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RS庫存編號 687-7803
製造零件編號UT232R-200-BLK
BrandFTDI Chip
TWD1,250.00
單位
USB - RS232 - -
RS庫存編號 179-7981
製造零件編號ICUSB2322I
TWD3,110.00
單位
USB - RS232 - 921.6kbit/s
RS庫存編號 179-7982
製造零件編號ICUSB2322F
TWD2,800.00
單位
USB - RS232 - 921.6kbit/s
RS庫存編號 144-5699
BrandRS PRO
TWD666.00
單位
- - - - -
RS庫存編號 688-3337
製造零件編號US-701
BrandBrainboxes
TWD8,857.00
單位
- - - - -