Home Theater Network
Data Connections


Parallel Parallel Input

The parallel port interconnect is considered a legacy port since it is being replaced by the USB / Firewire interconnect. Parallel port interconnects were commonly used by printers. Maximum data rate is 50 to 150 kb/s.

Serial (RS-232)

Serial (RS-232) Serial (RS-232) Input

Like the parallel port, the serial RS-232 interconnect is being replaced by USB and Firewire. The RS-232 limits the data rate to maximum of 20 kb/s, but some PCs allow rates of up to 115 kb/s.


PS/2PS/2 Input
The PS/2 interconnect is used to connect keyboards and mouse interfaces. Like parallel and serial ports, the PS/2 interconnect is slowly being replaced with USB and Firewire.



BNC is a versatile interconnect that can be used to carry video, audio, and data signals. Data cables using BNC interconnects are found mostly in professional data acquisition hardware. A BNC interconnect is almost always found using a coax cable, which means it can only pass a single channel. The signal can be digital or analog.

Click here for more information on BNC’s video capabilities.
Click here for more information on BNC’s audio capabilities.

Best Buy's Geek Squad
Firewire - 6 pin Firewire - 4 pin Firewire - 9 pin USB Type B USB - Type A USB - Type mini-B Ethernet (RJ45) Telephone (RJ11) BNC Serial Parallel PS/2