No — a "dongle" alone doesn't give internet.
| Device | Purpose | Works for PS3 Online? |
|---|---|---|
| USB Wi-Fi Adapter | Adds Wi-Fi to fat PS3 (no built-in) | ✅ Yes — if configured to your router |
| Bluetooth Dongle | Headset/keyboard/mouse | ❌ No internet |
| 3G/4G USB Modem | Cellular data | ❌ PS3 doesn't support |
| Ethernet-to-USB Adapter | Wired via USB | ❌ PS3 doesn't support |
Fat PS3 (CECHA–CECHG) has no Wi-Fi — use Ethernet cable or official Sony USB Wi-Fi adapter (rare). Slim/Super Slim have built-in Wi-Fi.