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2. Rollover cable - Wikipedia

   en.wikipedia.org/wiki/Rollover_cable

   This cable is typically flat (and has a light blue color) to help distinguish it from other types of network cabling. It gets the name rollover because the pinouts on one end are reversed from the other, as if the flat cable had been rolled over. This cabling system was invented to eliminate the differences in RS-232 wiring systems. Any two RS ...

3. Null modem - Wikipedia

   en.wikipedia.org/wiki/Null_modem

   A null modem adapter. Null modem is a communication method to directly connect two DTEs (computer, terminal, printer, etc.) using an RS-232 serial cable.The name stems from the historical use of RS-232 cables to connect two teleprinter devices or two modems in order to communicate with one another; null modem communication refers to using a crossed-over RS-232 cable to connect the teleprinters ...

4. List of video connectors - Wikipedia

   en.wikipedia.org/wiki/List_of_video_connectors

   Where BNC is used, available as 3 connectors with Sync on Green, or 5 connector Red / Green / Blue / Horizontal Sync / Vertical sync. Mac-II/Quadra DA15F: 1152 × 870 @ 75 [8] Macintosh: Mac-DA15F and Sun-13W3 were similar in capability to VGA. Some Sun machines used 4 or 5 BNC connectors to transfer video signal. 1990: 13W3 DB13W3: 1152 × 900 ...

5. DB9 - Wikipedia

   en.wikipedia.org/wiki/DB9

   DB9 (yacht), a superyacht built by Palmer Johnson in 2010 DE-9 connector , a common type of D-subminiature electrical connector, widely referred to as "DB-9" even though that is a different sized connector.

6. RS-232 - Wikipedia

   en.wikipedia.org/wiki/RS-232

   EIA/TIA-561 – defines RS-232 pinouts for eight-position, eight-contact (8P8C) modular connectors (which may be improperly called RJ45 connectors) EIA/TIA-562 – low-voltage version of EIA/TIA-232; TIA-574 – standardizes the 9-pin D-subminiature connector pinout for use with EIA-232 electrical signalling, as originated on the IBM PC/AT

7. Serial port - Wikipedia

   en.wikipedia.org/wiki/Serial_port

   8P8C connectors are also used in many devices. The EIA/TIA-561 standard defines a pinout using this connector, while the rollover cable (or Yost standard) is commonly used on Unix computers and network devices, such as equipment from Cisco Systems. [7] Pair of female Mini DIN-8 connectors used for RS-422 serial ports on a Macintosh LC computer