CHSOS Cables & Connectivity Exam Notes – HDMI,
DisplayPort, USB-C, Network Hardware, and WiFi
Latest Updated 2026
HDMI (High-Definition Multimedia Interface)
Flat, wide plug (19 pins); Transmits digital video and audio; Supports HD/4K/8K video; single
cable
Mini HDMI / Micro HDMI
Smaller HDMI versions; Connects small devices to displays; Compact form; same functionality
DisplayPort
Rectangular with one beveled corner; Transmits video/audio; High refresh rates, daisy-chain
capable
Mini DisplayPort / Thunderbolt 2
Small rectangular port; Video and data output; Converts to HDMI/VGA/DVI
DVI-D (Digital)
24-pin grid, no analog pins; Digital video only; Used for digital monitors
DVI-A (Analog)
Fewer pins, includes analog; Analog displays; Rare legacy type
DVI-I (Integrated)
Analog + digital pins; Works with both signal types; Universal DVI version
DVI Dual-Link
Extra pins in middle; High-resolution video; Supports up to 2560x1600
VGA
Blue trapezoid with 15 pins; Analog video; Legacy connector
USB-C (Display/Data/Power)
Small, oval, reversible; Combines video, data, power; Modern laptops and devices
S-Video
, Round connector, 4 small pins; Analog video; Legacy AV equipment
Composite Video (RCA Yellow)
Single yellow RCA plug; Analog video; Low resolution
Component Video (RCA RGB)
Red/Blue/Green RCA plugs; Analog separated color video; Better quality than composite
HDBaseT
RJ45-style plug; Long-distance HDMI/audio/control; Up to 100m over Cat6
SDI (Serial Digital Interface)
Coax cable with BNC connectors; Professional-grade video; Used in broadcast systems
IEC C13/C14
Rectangular 3-prong plug; Powers PCs and monitors; Standard computer power cord
IEC C19/C20
Larger rectangular plug; Powers servers or UPS; High current capacity
Figure-8 (C7)
Rounded figure-8 shape; Powers smaller devices; No ground pin
Mickey Mouse (C5)
Cloverleaf connector; Laptop power supply; Three rounded holes
NEMA 5-15
Standard 3-prong; Extension or wall plug; 15A capacity
DC Barrel Plug
Round with hollow center; DC power connection; Polarity-sensitive
USB Power Cable
Standard USB connectors; Power small devices; Usually 5V DC
PoE (Power over Ethernet)
RJ45 connector; Powers IP cameras, manikins; Data + power on one cable
Locking Power Cable
DisplayPort, USB-C, Network Hardware, and WiFi
Latest Updated 2026
HDMI (High-Definition Multimedia Interface)
Flat, wide plug (19 pins); Transmits digital video and audio; Supports HD/4K/8K video; single
cable
Mini HDMI / Micro HDMI
Smaller HDMI versions; Connects small devices to displays; Compact form; same functionality
DisplayPort
Rectangular with one beveled corner; Transmits video/audio; High refresh rates, daisy-chain
capable
Mini DisplayPort / Thunderbolt 2
Small rectangular port; Video and data output; Converts to HDMI/VGA/DVI
DVI-D (Digital)
24-pin grid, no analog pins; Digital video only; Used for digital monitors
DVI-A (Analog)
Fewer pins, includes analog; Analog displays; Rare legacy type
DVI-I (Integrated)
Analog + digital pins; Works with both signal types; Universal DVI version
DVI Dual-Link
Extra pins in middle; High-resolution video; Supports up to 2560x1600
VGA
Blue trapezoid with 15 pins; Analog video; Legacy connector
USB-C (Display/Data/Power)
Small, oval, reversible; Combines video, data, power; Modern laptops and devices
S-Video
, Round connector, 4 small pins; Analog video; Legacy AV equipment
Composite Video (RCA Yellow)
Single yellow RCA plug; Analog video; Low resolution
Component Video (RCA RGB)
Red/Blue/Green RCA plugs; Analog separated color video; Better quality than composite
HDBaseT
RJ45-style plug; Long-distance HDMI/audio/control; Up to 100m over Cat6
SDI (Serial Digital Interface)
Coax cable with BNC connectors; Professional-grade video; Used in broadcast systems
IEC C13/C14
Rectangular 3-prong plug; Powers PCs and monitors; Standard computer power cord
IEC C19/C20
Larger rectangular plug; Powers servers or UPS; High current capacity
Figure-8 (C7)
Rounded figure-8 shape; Powers smaller devices; No ground pin
Mickey Mouse (C5)
Cloverleaf connector; Laptop power supply; Three rounded holes
NEMA 5-15
Standard 3-prong; Extension or wall plug; 15A capacity
DC Barrel Plug
Round with hollow center; DC power connection; Polarity-sensitive
USB Power Cable
Standard USB connectors; Power small devices; Usually 5V DC
PoE (Power over Ethernet)
RJ45 connector; Powers IP cameras, manikins; Data + power on one cable
Locking Power Cable
