UPort 1450I B to 4-port RS-232/422/485 serial hub $679.00 https://www.ebay.com/itm/115515753411?hash=item1ae54683c3:g:…
UPort 1450I UPort 1000 Series B to 4-port RS-232/422/485 serial hub with 2 kV $727.99 https://www.ebay.com/itm/122524522580?hash=item1c8707d854:g:…
Sealink+16.Ultra Ethernet To 16-Port Rs-232 Rs-422 Rs-485 Serial Server $929.96 An item that has been used previously, fully operational an…