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Almost all industrial ones, the same Dell, Panasonic, only they cost like a used machine
Is that any very dense junk from the beginning of the 2000s. Or near-industrial options.
So far, RS232<->USB converters (on the FT232 chip) give good results, there is even an example of successful use of the UART<->Bluetooth converter (HC-05 Module).
It all depends on the device that you want to attach. If the case is limited to a standard UART or RS232, almost any converter will do. But if additional lines of the RS232 interface come into play, difficulties are possible.
In extreme cases, it is possible to organize the wildest collective farm from the USB-PCMCIA adapter
- and insert the PCMCIA-RS232 adapter into it.
On ancient laptops that had a PCMCIA slot on board, such an adapter worked indistinguishably from the built-in RS232 port.
Those in which a USB adapter is inserted.
I don't remember laptops with COM for 10 years already.
https://market.yandex.ua/catalog/54544/list?hid=91... more than a hundred models were found in the Yandex market. Choose :)
Of the modern ones, there is only one model with a sane price: HP ProBook 650 G1
There is also a variation with an AMD processor, but it will be worse in performance than a mobile phone.
there is no point in looking for built-in com ports, because inside they are soldered on the board like a usb-com adapter
I'm afraid to ask: what adapters do not suit?
www.moxa.ru/shop/usb/1_port/uport_1150 - I've been working with this for the third year, the thing is excellent.
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