However, for most modern users, the industry has moved toward cloud DVRs and streaming. If you do not already own a compatible box, buying a used Arris DVR and a 500GB module is not worth the hassle when a $30 digital antenna + Tabo gives you free OTA DVR.
| Video Quality | Bitrate (Mbps) | Hours Per 10GB | | |---------------|----------------|----------------|--------------------------| | SD (480i) | 3 Mbps | 7.4 hrs | ~370 hours | | 720p (HD) | 8 Mbps | 2.8 hrs | ~140 hours | | 1080i (HD) | 12 Mbps | 1.9 hrs | ~95 hours | | 4K (limited) | 25 Mbps | 0.9 hrs | ~45 hours | arris dvr module 500g
If you own a cable DVR from providers like Comcast Xfinity, Spectrum, or Cox, you may have noticed a mysterious door on the front or back panel of your set-top box. That door is the gateway to expansion, and the Arris 500GB DVR Module is one of the most popular, cost-effective solutions to double or triple your recording capacity. However, for most modern users, the industry has
If you hate monthly fees and have a compatible Arris DVR, the 500G module wins. If you have already switched to a streaming-first setup, cloud DVR or a network DVR like Tablo is better. Frequently Asked Questions (FAQ) Q: Will the Arris DVR Module 500G work with my Xfinity X1 DVR? A: No. Xfinity X1 boxes (XG1v3, XG1v4, Xi5, Xi6) do not have internal expansion bays. They use external USB 3.0 drives or cloud storage. Q: Can I upgrade the 500GB module to a 1TB drive inside the caddy? A: Technically yes, but it requires opening the caddy (voiding any warranty) and cloning the firmware. Many users have swapped in a 1TB Western Digital Blue drive, but the DVR may only recognize the first 500GB due to firmware limits. Q: I installed the module, but my DVR still shows the same recording space. A: You likely need to reformat the drive. Go to Settings > DVR > Storage Management > Erase Expansion Drive (this will not delete your primary recordings). Q: Does the 500GB module make my DVR slower? A: No. In fact, it can improve performance because the primary drive is no longer handling simultaneous write operations. Seek times remain unchanged (~15ms). Q: Can I use this module with a Tivo or HDHomeRun? A: No. The pin connector is proprietary to Arris DCX and Explorer series DVRs only. Tivo uses eSATA or internal 3.5-inch drives. Conclusion: Is the Arris DVR Module 500G Still Worth It? The Arris DVR Module 500G is a niche but powerful upgrade for a rapidly shrinking audience. If you are a cable loyalist who owns a compatible Arris DCX3400, DCX3200M, or Explorer 8640 DVR, this $50–70 module can breathe years of extra life into your system. You gain 70–100 hours of HD recording space, a second live TV buffer, and zero monthly fees. That door is the gateway to expansion, and