ATEN SN3402 serial server RS-232/422/485

Product Overview

AI-generated summary

ATEN’s SN3402 is the kind of serial-to-network box that quietly fixes a lot of “legacy meets modern” headaches. If you’ve got RS-232/422/485 gear sitting on a site that needs to be reachable over Ethernet (access control panels, industrial sensors, ticketing kiosks, old weighing systems, etc.), this is a sensible way to avoid ripping and replacing. For ~£197 ex‑VAT, it’s good value when the alternative is expensive integration work or swapping working hardware—especially in UK B2B environments where serial is still everywhere behind the scenes.

That said, I wouldn’t buy it for anything that doesn’t truly need serial. If you’re expecting “easy plug-and-play” for arbitrary devices, success depends on the device’s serial settings and how your software/client side handles them—so there’s a bit of admin involved (drivers, ports, TCP/UDP behaviour, and sometimes protocol quirks). It’s also not the right tool if you need high-throughput or real-time deterministic performance; it’s for connecting and routing serial, not for replacing a proper industrial comms stack. Overall: buy it if you’ve got specific RS-232/422/485 equipment you must keep, and you can spare a little time to line up configuration—skip it if your requirement is general “network connectivity” rather than true serial integration.