ホームネットワーキング用最高のEthernetケーブル

## The Quick Answer

**Cat6** for most homes. Cat6a if you want 10 Gbps future-proofing.

## Category Comparison

| Category | Max Speed | Max Distance | Cost/m | Use Case |
|---|---|---|---|---|
| Cat5e | 1 Gbps | 100m | $0.20 | Budget, basic |
| Cat6 | 1-10 Gbps | 100m (1G) / 55m (10G) | $0.30 | Best value |
| Cat6a | 10 Gbps | 100m | $0.50 | Future-proof |
| Cat7 | 10 Gbps | 100m | $0.70 | Overkill for home |
| Cat8 | 25-40 Gbps | 30m | $1.50 | Data center only |

## Tips for Home Runs

- **In-wall**: Use solid-core Cat6a (CMR rated for plenum)
- **Patch cables**: Stranded-core is more flexible
- **Outdoor**: Get UV-resistant jacket or use conduit
- **Flat cables**: Fine for short runs, avoid for long permanent installs

## Do You Even Need Ethernet?

Use Ethernet for: gaming PCs, NAS, streaming servers, home office, smart home hubs. Use Wi-Fi for: phones, tablets, smart speakers, casual browsing.