Comptia 3.1

USB 2.0

Data Transfer Speed: Up to 480 Mbps; used for peripherals like keyboards, mice, and flash drives.

USB 3.0

Data Transfer Speed: Up to 5 Gbps; backward compatible with USB 2.0 and used for faster data transfer.

RS-232

A legacy serial communication interface with connectors like DB-9 or DB-25, often used for modems.

HDMI

Supports high-definition video and audio; connectors include Type-A, Type-C, and Type-D.

DisplayPort

Supports high resolutions and audio transmission; allows daisy-chaining multiple monitors.

DVI

Can transmit digital, analog, or both signals; includes DVI-D, DVI-A, and DVI-I types.

VGA

Legacy interface for analog video signals; transmits up to 1920x1080 resolution.

SATA

Used to connect internal storage devices; supports hot-swapping and various data transfer speeds.

eSATA

External SATA for connecting external storage devices; similar to SATA but does not supply power.

SCSI

Legacy interface for connecting multiple devices in a single bus; uses IDs for device identification.

IDE

Also known as PATA; an older standard for connecting storage devices using 40-pin connectors.

PS/2

Connector type for keyboards (purple) and mice (green); largely replaced by USB.

Active Adapter

Contains circuitry to convert signals; required when converting between digital and analog signals.

Passive Adapter

Simply changes the connector type without signal conversion; used when signal types are compatible.

Thunderbolt 3 & 4

Data Transfer Speed: Up to 40 Gbps; connectors use USB-C and support data, video, and power delivery.

Backward Compatibility

The ability of some interfaces (e.g., USB 3.0) to accept older versions of devices (e.g., USB 2.0).