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Faxswitch.com: Computer Switch Boxes
Makers of call routers, voice/fax/modem/data call processors, automatic call distributors, fax over IP and networking equipment for businesses.
QVS: Computer Switch Boxes
Manufactures cables and connectivity products for the computer and communication industries. Parallel, SCSI, Mac, KVM, ethernet, and USB switches.
CableWholesale.com: Switch Boxes
Wholesale cable and PC products supplier offering switch boxes, including manual and monitor.
History of the parallel port
This page, from Warp Nine Engineering, provides a history of the PC parallel port. There are tables that provide SPP signal and register definitions, as well as a description of transfer modes.
IEEE 1284 Parallel Port information page
Contains links to an introduction to the IEEE 1284 standard and operating modes, parallel port standards information, activities and news, FAQs, compatible products and links, and the IEEE standards organization home page.
Describes the settings that control system integrated peripherals. This page is from "The PC Guide".
Parallel port central
Contains a collection of links and resources for the PC parallel port including ECP, EPP, bidirectional, and IEEE-1284 modes.
Parallel port FAQ
Provides answers to specific, technical questions relating to programming, interfacing and using the parallel port.
Troubleshooting Peripheral I/O Ports
Discusses troubleshooting of peripheral I/O ports on the PC including serial and parallel I/O port connections. This page is from "The PC Guide."
Quatech: Serial Port Cards
Offers serial ports for portable, desktop and network systems with 1-16 port RS-232 and RS-422/485 adapters for PCI, USB, PCMCIA and CompactFlash.
KnowledgeStorm: Computer Switch Boxes
Business technology search site offering software, service, reseller and hardware information on thousands of IT solutions.