The ARRIS Touchstone DG3450 is a DOCSIS 3.1 cable modem gateway designed for gigabit internet with reliable Wi-Fi for busy homes and small offices. It’s backward-compatible with DOCSIS 3.0 and supports advanced features like MoCA 2.0 for whole-home coax networking.
Homes with many connected devices, 4K streaming, video calls, online classes, and light gaming looking for a single all-in-one gateway (modem + router) that’s easy to deploy and manage.
The DG3450 is commonly approved on major cable providers like Xfinity, Cox, and Spectrum (availability varies by region/plan). Always confirm with your provider’s device list and ensure your service tier matches the device’s capabilities.
Need a plain cable modem (no Wi-Fi) or a 2.5G-capable option? Browse our Cable Modems and Modem-Router Combos.
| DOCSIS | 3.1 (backward-compatible with 3.0) |
| Channel Support | DOCSIS 3.1 OFDM/OFDM-A + 3.0 SC-QAM (downstream/upstream) |
| Wi-Fi | Dual-band 2.4 GHz + 5 GHz, 802.11ac Wave 2 (backward-compatible) |
| Ports | Gigabit Ethernet LAN (see model/firmware), RF coax input, power |
| MoCA | MoCA 2.0 (separate adapters may be required for client devices) |
| Management | Web UI (local/remote as provisioned), TR-069, SNMP, TFTP |
| Security | WPA2/WPA3 (per firmware), SPI firewall, NAT |
| Dimensions | Approx. 9.3 × 2.9 × 8.0 in (varies by revision) |
Note: Coaxial cable and MoCA filters/splitters are typically provided by your ISP or sold separately. Contents may vary by distributor/batch.
If your provider supports DOCSIS 3.1 or 3.0 and lists the DG3450 (or family) as approved, you’re good to go. Always match the gateway to your speed tier for best results.
Yes—this is a gateway (modem + Wi-Fi router). If you prefer your own mesh system, you can typically disable the built-in Wi-Fi and connect your mesh to a LAN port (bridge mode may be available per firmware/ISP).
Yes, MoCA 2.0 is supported. You’ll usually add MoCA adapters at devices/rooms you want to hard-wire over coax.
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