This USB to RS-232 serial hub lets you connect RS-232 serial devices to your laptop or desktop computer through a single USB port, as though the computer offered built-on DB9M serial connectors. The RS-232 serial hub is compactly designed to preserve valuable workspace, and is bus-powered to eliminate the need for an external power adapter.
We no longer carry StarTech.com 4 Port USB to RS-232 Serial DB9 Adapter
(713272), but we found this replacement for you.
Compare the discontinued item to the replacement item: