Adapter Cards
1. What are Adapter Cards?
Adapter Cards are function expansion cards in computer hardware. They are inserted into expansion slots on the motherboard (such as PCI and PCIe interfaces) to connect the system to peripheral devices or add specific functions. Its core function is to establish a standardized interface between the computer bus and external devices to complete signal conversion, protocol adaptation, and data transmission.
2. What are the Main Types of Adapter Cards?
Adapter cards can be divided into the following categories according to their functions:
Network Adapter Card (NIC)
Used to connect computers to wired/wireless networks, supporting Ethernet protocol and data encapsulation transmission.
Sound Card (Audio Card)
Processes the input/output of audio signals, supporting high-fidelity sound effects and multi-channel output.
Storage Interface Card
Such as the SCSI adapter card, used to connect high-speed storage devices (such as hard disk arrays).
Specialized Function Expansion Card
Including video capture cards, industrial control cards, etc., providing customized functions for specific scenarios.
3. Hardware Composition and Related Components of Adapter Cards
1) Core Components
Interface Circuit: Realize electrical signal matching between bus and device.
Control Chip: Manage data transmission protocols (such as TCP/IP, SCSI).
Connectors: Such as gold fingers (motherboard slot contacts), which must meet high plug-in life and stable contact resistance.
2) Supporting Components
Power Adapter Module: Provides regulated DC power (such as DC 12V/1A) for the card-mounted chip.
Capacitor/Resistor: Used for signal filtering and circuit protection.
4. What are Adapter Cards Used for?
Adapter cards are widely used in computer expansion, industrial control, network communication, and other fields, supporting modular design and equipment function upgrades. For example, security cameras access the network through adapter cards, and routers rely on network cards to achieve data transmission.