Add four RS232 serial ports to any notebook or desktop computer using a single USB port
Add an RS232 serial port to a notebook or desktop computer with this Plug-and Play USB adapter cable
Add an RS232 serial port to your laptop or desktop computer through USB
StarTech.com 2 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention - Serial adapter - USB - RS-232 x 2 - black
Add a parallel port to your desktop computer through a PCI Express slot; features both standard and half-height mounting brackets.
StarTech.com DB25 to RJ45 Modular Adapter - M/F - Serial adapter - DB-25 (M) to RJ-45 (F)
Add an RS232 serial port to your laptop or desktop computer through a detachable USB cable
StarTech.com 6 ft Straight Through Serial Cable - DB9 M/F - Serial cable - DB-9 (M) to DB-9 (F) - 6 ft - for P/N: PEX1S553, PEX2S553LP, PEX2S553, PEX1S553LP, PCI2S232485I, PEX16S952LP, PCI8S950LP
StarTech.com Slimline DB9 Serial Gender Changer - F/F - Serial gender changer - DB-9 (F) to DB-9 (F) - for P/N: NETRS2321E, NETRS232_4GB
Add a Centronics parallel port to your desktop or laptop PC through USB
StarTech.com 10 ft Cross Wired DB9 to DB25 Serial Null Modem Cable - F/M - Null modem cable - DB-9 (F) to DB-25 (M) - 10 ft - for P/N: PEX1S553, PEX2S553LP, PEX2S553, PEX1S553LP, PCI2S232485I, PEX16S952LP, PCI8S950LP
Connect your computer's serial port to the RJ45 console port on your Cisco router
Tripp Lite 10ft Null Modem Serial RS232 Cable Adapter DB9 F/F 10' - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft - molded
Add a Null Modem RS232 serial port to your laptop or desktop computer through USB
StarTech.com 1 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART - Serial adapter - PCIe low profile - RS-232
StarTech.com 1 Port Industrial USB to RS232 Serial Adapter with 5KV Isolation and 15KV ESD Protection - Serial adapter - USB - RS-232 x 1 - black
Easily convert an RS232 serial signal (-12 to +12V) to a transistor-transistor logic signal (0 to +5V)
SIIG Cyber 2S1P PCIe - Parallel/serial adapter - PCIe - parallel, RS-232 - 2 ports + 1 x parallel port
A 4-port RS-232 serial hub with DB9 connectors and USB interface.
StarTech.com 4 port PCI RS232 Serial Adapter Card with 16550 UART - Serial adapter - PCI - RS-232 x 4
Reliable alternative to serial cards that offers an easy solution for adding COM ports to a laptop, thin client or legacy-free PC to connect serial and USB peripheral devices.
Add 4 DIN Rail-mountable RS232 Serial ports to any system through USB
Add an RS232 serial port with COM retention to your laptop or desktop computer through USB
SIIG JU-SC0211-S1 - Serial adapter - USB - RS-232 x 8 - black