{"product_id":"usb-to-serial-rs232-4-port-adapter-wall-mount-din-rail","title":"USB to Serial RS232 4 Port Adapter - Wall Mount DIN Rail","description":"\u003cp\u003eIn this review of the USB to Serial RS232 4 Port Adapter, the reviewer finds it best suited for engineers, field technicians, and industrial integrators who need a rugged, compact way to convert a single USB connection into multiple DB9 serial ports. The single biggest reason to buy is its combination of a metal enclosure and flexible mounting options, which deliver reliable serial connectivity in harsh environments without extra power supplies. Installation is straightforward and the device keeps COM assignments stable, making it practical for equipment that must remain reachable after reboots.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial strength:\u003c\/strong\u003e The rugged all-metal enclosure provides durability and protection for deployments in demanding industrial settings.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFour RS232 ports:\u003c\/strong\u003e Converts one USB connection into four DB9 serial ports to connect multiple legacy devices simultaneously.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCOM retention:\u003c\/strong\u003e Maintains assigned COM port numbers so ports are automatically reassigned after reboots, reducing configuration time.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUSB powered:\u003c\/strong\u003e Runs from an available USB port so no external power adapter is required, simplifying installations on-site.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatile mounting:\u003c\/strong\u003e Integrated wall-mount brackets and included DIN rail clips allow secure mounting in control cabinets or on a desk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe adapter is ideal for technicians who manage serial equipment like PLCs, sensors, field data loggers and communication gateways that require reliable RS232 ports in industrial racks or outdoor enclosures. Its metal housing and DIN rail compatibility make it a natural choice for factory floors and network closets where sturdiness matters.\u003c\/p\u003e\n\u003cp\u003eThose who primarily need sequential port numbering for simple desktop experiments may find occasional quirks in port mapping a minor annoyance, so users requiring strict numeric sequencing for short-term lab use should consider that. For most production and field deployments the COM retention and rugged build outweigh this limitation.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDurable metal enclosure that stands up to industrial conditions.\u003c\/li\u003e\n \u003cli\u003eMaintains COM port assignments to preserve serial device mappings after reboot.\u003c\/li\u003e\n \u003cli\u003eNo external power needed because it is USB powered, simplifying wiring.\u003c\/li\u003e\n \u003cli\u003eFlexible mounting options with wall brackets and DIN rail clips included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003ePort mapping can be non-sequential in some cases, which may require checking COM assignments during setup.\u003c\/li\u003e\n \u003cli\u003eLimited to RS232 DB9 connectivity only, so additional adapters are needed for other serial standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eStarTech\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePorts\u003c\/td\u003e\n\u003ctd\u003e4 x RS232 DB9\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eUSB to serial (FTDI chipset)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eUSB powered (no external adapter required)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eWall mount brackets and DIN rail clips included\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eRugged all-metal construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe USB to Serial RS232 4 Port Adapter is a practical, value-oriented choice for industrial and field use where durability and stable COM assignments matter. Buyers who need a compact, USB powered RS232 hub with flexible mounting will find it reliable; those needing other serial standards will require additional converters.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it require an external power supply?\u003c\/strong\u003e\u003cbr\u003eIt is USB powered and does not need an external power adapter for normal operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it keep the same COM port numbers after a reboot?\u003c\/strong\u003e\u003cbr\u003eYes, the adapter supports COM retention so assigned port values are maintained across reboots.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for DIN rail installation?\u003c\/strong\u003e\u003cbr\u003eYes, it ships with top-hat DIN rail clips and also includes wall-mount brackets for flexible installation.\u003c\/p\u003e","brand":"StarTech","offers":[{"title":"Default Title","offer_id":48247078027483,"sku":"B008U3OVHW","price":127.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71d5VvmcKtL._AC_SL1500.jpg?v=1770961744","url":"https:\/\/gearmusthave.com\/products\/usb-to-serial-rs232-4-port-adapter-wall-mount-din-rail","provider":"GearMustHave","version":"1.0","type":"link"}