{"title":"USB Serial Adapters","description":"\u003cspan style=\"font-size: 0.875rem;\"\u003eWhether you require one serial port or sixteen, SeaLINK® USB serial adapters will have you quickly communicating with RS-232, RS-422 and RS-485 peripherals. Unlike traditional UART-based products, SeaLINK USB serial adapters use a state-machine architecture that reduces host processor overhead for faster, more reliable communications. Sealevel offers the largest selection of USB serial adapters available, including models with software configurable electrical interfaces. Authentic FTDI ICs ensure years of reliable, glitch-free communications while high-retention USB connectors prevent accidental removal of USB cables. SeaCOM software driver supports Microsoft Windows and Linux operating systems for easy installation.\u003c\/span\u003e\u003cbr\u003e","products":[{"product_id":"sealevel-641u-usb-to-rs-232-rj45-serial-interface-adapter","title":"Sealevel 641U USB to RS-232 RJ45 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 4 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167224992017,"sku":"641U","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-641U-Picture-1.jpg?v=1777371523"},{"product_id":"sealevel-641u-oem-usb-to-rs-232-rj45-serial-interface-adapter","title":"Sealevel 641U-OEM USB to RS-232 RJ45 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 4 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes four 3\/4 metal standoffs with nuts\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167225024785,"sku":"641U-OEM","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-641U-OEM-Picture-1.jpg?v=1777371524"},{"product_id":"sealevel-647u-usb-to-rs-232-rs-485-rj45-versacom-serial-interface-adapter","title":"Sealevel 647U USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 4 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eVersaCom design allows RS-232 or two-wire RS-485 selection via cabling on each individual port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167225385233,"sku":"647U","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-647U-Picture-1.jpg?v=1777371524"},{"product_id":"sealevel-647u-oem-usb-to-rs-232-rs-485-rj45-versacom-serial-interface-adapter","title":"Sealevel 647U-OEM USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 4 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eVersaCom design allows RS-232 or two-wire RS-485 selection via cabling on each individual port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes four 3\/4 metal standoffs with nuts\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167225843985,"sku":"647U-OEM","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-647U-OEM-Picture-1.jpg?v=1777371525"},{"product_id":"sealevel-681u-usb-to-rs-232-rj45-serial-interface-adapter","title":"Sealevel 681U USB to RS-232 RJ45 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 8 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167226138897,"sku":"681U","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-681U-Picture-1.jpg?v=1777371526"},{"product_id":"sealevel-681u-oem-usb-to-rs-232-rj45-serial-interface-adapter","title":"Sealevel 681U-OEM USB to RS-232 RJ45 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 8 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes four 3\/4 metal standoffs with nuts\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167226171665,"sku":"681U-OEM","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-681U-OEM-Picture-1.jpg?v=1777371526"},{"product_id":"sealevel-687u-usb-to-rs-232-rs-485-rj45-versacom-serial-interface-adapter","title":"Sealevel 687U USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 8 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eVersaCom design allows RS-232 or two-wire RS-485 selection via cabling on each individual port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167226237201,"sku":"687U","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-687U-Picture-1.jpg?v=1777371527"},{"product_id":"sealevel-687u-oem-usb-to-rs-232-rs-485-rj45-versacom-serial-interface-adapter","title":"Sealevel 687U-OEM USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eUtilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs\u003c\/li\u003e\n \t\u003cli\u003eProvides 8 RJ45 serial ports with Tx\/Rx status LEDs\u003c\/li\u003e\n \t\u003cli\u003eIntegrates transmit and receive LED indicators on each port\u003c\/li\u003e\n \t\u003cli\u003eVersaCom design allows RS-232 or two-wire RS-485 selection via cabling on each individual port\u003c\/li\u003e\n \t\u003cli\u003eHigh-retention USB type B connector prevents accidental disconnection of USB cable\u003c\/li\u003e\n \t\u003cli\u003eInput power via terminal block or barrel connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes four 3\/4 metal standoffs with nuts\u003c\/li\u003e\n \t\u003cli\u003eIncludes 72 USB A to B cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167226564881,"sku":"687U-OEM","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-687U-OEM-Picture-1.jpg?v=1777371528"},{"product_id":"sealevel-2102-usb-to-1-port-rs-422-rs-485-rs-530-db25-serial-interface-adapter","title":"Sealevel 2102 USB to 1-Port RS-422, RS-485, RS-530 DB25 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eConfigurable for RS-422, RS-485, or RS-530\u003c\/li\u003e\n \t\u003cli\u003eHigh-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO\u003c\/li\u003e\n \t\u003cli\u003eData rates to 921.6K bps\u003c\/li\u003e\n \t\u003cli\u003eAutomatic RS-485 enable\/disable\u003c\/li\u003e\n \t\u003cli\u003eAll modem control signals implemented\u003c\/li\u003e\n \t\u003cli\u003eHot-swappable\u003c\/li\u003e\n \t\u003cli\u003ePowered by USB connection\u003c\/li\u003e\n \t\u003cli\u003eDB-25M connector\u003c\/li\u003e\n \t\u003cli\u003eSealevel software supports Windows 98SE\/ME\/2000\/XP\/Vista and Linux operating systems\u003c\/li\u003e\n \t\u003cli\u003eIncludes 6′ USB device cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167226695953,"sku":"2102","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-2102-Picture-1.jpg?v=1777371528"},{"product_id":"sealevel-2103-usb-to-1-port-isolated-rs-232-db25-serial-interface-adapter","title":"Sealevel 2103 USB to 1-Port Isolated RS-232 DB25 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eHigh-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO\u003c\/li\u003e\n \t\u003cli\u003eOptical isolation provides protection against transients and ground loops\u003c\/li\u003e\n \t\u003cli\u003eData rates to 460.8K bps\u003c\/li\u003e\n \t\u003cli\u003eHot-swappable\u003c\/li\u003e\n \t\u003cli\u003ePowered by USB connection\u003c\/li\u003e\n \t\u003cli\u003eSealevel software supports Windows 98SE\/ME\/2000\/XP\/Vista and Linux operating systems\u003c\/li\u003e\n \t\u003cli\u003eDB-25M connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes 6′ USB device cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167226728721,"sku":"2103","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-2102-Picture-1_2dd40102-2742-4638-938d-15e757ec05f1.jpg?v=1777371529"},{"product_id":"sealevel-2104-usb-to-1-port-isolated-rs-422-rs-485-rs-530-db25-serial-interface-adapter","title":"Sealevel 2104 USB to 1-Port Isolated RS-422, RS-485, RS-530 DB25 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eConfigurable for RS-422, RS-485, or RS-530\u003c\/li\u003e\n \t\u003cli\u003eOptical isolation provides protection against transients and group loops\u003c\/li\u003e\n \t\u003cli\u003eHigh-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO\u003c\/li\u003e\n \t\u003cli\u003eData rates to 921.6K bps\u003c\/li\u003e\n \t\u003cli\u003eAutomatic RS-485 enable\/disable\u003c\/li\u003e\n \t\u003cli\u003eHot-swappable\u003c\/li\u003e\n \t\u003cli\u003ePowered by USB connection\u003c\/li\u003e\n \t\u003cli\u003eSealevel software supports Windows 98SE\/ME\/2000\/XP\/Vista and Linux operating systems\u003c\/li\u003e\n \t\u003cli\u003eDB-25M connector\u003c\/li\u003e\n \t\u003cli\u003eIncludes 6′ USB device cable (Item# CA179)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167226827025,"sku":"2104","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-2102-Picture-1_a6e6bfd6-a774-43e7-b99c-004b8ceb55fc.jpg?v=1777371530"},{"product_id":"sealevel-2105r-usb-to-rs-232-db9-serial-interface-adapter","title":"Sealevel 2105R USB to RS-232 DB9 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eRugged, military-grade enclosure improves durability in mobile and industrial applications\u003c\/li\u003e\n \t\u003cli\u003eHigh-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO\u003c\/li\u003e\n \t\u003cli\u003eProgrammable baud rate and data formats\u003c\/li\u003e\n \t\u003cli\u003eSupports data rates to 921.6K bps\u003c\/li\u003e\n \t\u003cli\u003eStatus LEDs molded into enclosure indicate serial data activity and connection to host\u003c\/li\u003e\n \t\u003cli\u003eAll modem control signals implemented\u003c\/li\u003e\n \t\u003cli\u003ePowered by USB host connection\u003c\/li\u003e\n \t\u003cli\u003eSealevel SeaCOM software supports Windows and Linux operating systems\u003c\/li\u003e\n \t\u003cli\u003eAttached cable is approximately 56 inches in length\u003c\/li\u003e\n \t\u003cli\u003eOverall length is 60 inches\u003c\/li\u003e\n \t\u003cli\u003eStandard DB-9M serial connector\u003c\/li\u003e\n \t\u003cli\u003eMade in the USA\u003c\/li\u003e\n \t\u003cli\u003eLifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167228268817,"sku":"2105R","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-2105R-Picture-1.jpg?v=1777371530"},{"product_id":"sealevel-2106-usb-to-1-port-rs-422-db9-serial-interface-adapter","title":"Sealevel 2106 USB to 1-Port RS-422 DB9 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eHigh speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO\u003c\/li\u003e\n \t\u003cli\u003eData rates to 921.6K bps\u003c\/li\u003e\n \t\u003cli\u003eRugged construction using molded connectors\u003c\/li\u003e\n \t\u003cli\u003ePowered by USB connection\u003c\/li\u003e\n \t\u003cli\u003eSealevel software supports Windows 98SE\/ME\/2000\/XP\/Vista and Linux operating systems\u003c\/li\u003e\n \t\u003cli\u003eTotal length 60″\u003c\/li\u003e\n \t\u003cli\u003eDB-9M connector\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default Title","offer_id":50167228825873,"sku":"2106","price":0.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/6109\/1857\/files\/Sealevel-2106-Picture-1.jpg?v=1777371531"},{"product_id":"sealevel-2107-usb-to-1-port-rs-485-db9-serial-interface-adapter","title":"Sealevel 2107 USB to 1-Port RS-485 DB9 Serial Interface Adapter","description":"\u003cul\u003e\n \t\u003cli\u003eUSB to RS-485 asynchronous serial port adapter\u003c\/li\u003e\n \t\u003cli\u003eRugged, military-grade enclosure improves durability in mobile and industrial applications\u003c\/li\u003e\n \t\u003cli\u003eCompliant with RoHS and WEEE directives\u003c\/li\u003e\n \t\u003cli\u003eHigh-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO\u003c\/li\u003e\n \t\u003cli\u003eOverall length is 48 inches\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sealevel","offers":[{"title":"Default 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