How to choose the LAN cable/Network Cable ?

CAT5e
Speed: 1 Gbps
Bandwidth: 100 MHz
Advantages: Low cost, suitable for home 100M networks, 10% improvement in anti-interference capability compared to CAT5.
Use Cases: Small apartments/rental homes/surveillance cabling.

CAT6
Speed: 10 Gbps
Bandwidth: 250 MHz
Advantages: Cross-separator structure reduces crosstalk, supports Gigabit to 10-Gigabit upgrades.
Use Cases: Smart homes/gaming rooms/SMB offices.

CAT6a
Speed: 10 Gbps (100 meters)/40 Gbps
Bandwidth: 500 MHz
Advantages: Dual shielding design supports 10G to 40G long-distance transmission.
Use Cases: Data center short-range connections/high-density office areas.

CAT7
Speed: 10 Gbps
Bandwidth: 600 MHz
Advantages: Full shielding with aluminum foil + braided mesh for maximum anti-interference.
Use Cases: Industrial environments/areas with strong electromagnetic interference.

CAT7a
Speed: 40 Gbps (100 meters)
Bandwidth: 1 GHz
Advantages: Ultra-wide frequency support, future-proof for network upgrades.
Use Cases: 5G base stations/smart factories/research institutions.

CAT8
Speed: 25 Gbps / 40 Gbps (30 meters)
Bandwidth: 1000 MHz
Advantages: Highest frequency design, supports 8K video transmission.
Use Cases: Data centers/cloud computing centers/high-end server connections.