StarTech.com USB to Serial Adapter Hub - 4 Port - Bus Powered - DB9 (9-pin) - USB Serial - FTDI USB to Serial Adapter
Add four RS232 serial ports to any notebook or desktop computer using a single USB port
This 4 Port USB to RS232 Serial Hub lets you connect up to four RS232 serial devices to your Mac or PC laptop or desktop computer through a single USB port, as though the computer offered built-on DB9M serial connectors.
The RS232 Serial Hub is compactly designed to preserve valuable workspace, and is bus-powered to eliminate the need for an external power adapter.
A cost-effective solution that bridges the compatibility gap between modern USB-capable computers and legacy RS232 serial peripherals, this dependable USB/RS232 Serial Adapter hub is backed by StarTech.com's Lifetime Warranty.
The StarTech.com Advantage
StarTech.com ICUSB2324, USB, Serial, Silver, Plastic, CE, FCC, RoHS, 1 W
StarTech.com ICUSB2324. Host interface: USB, Hub interfaces: Serial. Product color: Silver, Housing material: Plastic, Certification: CE, FCC, RoHS. Power consumption (typical): 1 W, Power consumption (max): 1.5 W. Windows operating systems supported: Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10..., Mac operating systems supported: Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.6 Snow..., Other operating systems supported: Windows XP Embedded. Width: 2.62" (66.5 mm), Depth: 5.91" (150 mm), Height: 1.02" (26 mm)