Customer Ratings & Reviews

This is the new S34 cable modem for higher upload speeds (approx 400mbps upload). I received a notification last December (2023) from comcast/xfinity that higher upload speeds were available, and that my existing modem (S33), was not capable of taking advatage of those speeds. It’s true, the S33 only provided 40mbps upload speeds. The S34 provides up to ~400mbps upload with the new OFDM channels for upload. Download speeds are still capable up to 2.5gbps (or 3.5gbps with dual wan ethernet). The higher upload speeds are meant for all the video conferencing, VR, facetime, etc. that existing upload speeds have overlooked for a long time, until now. Definately purchase this instead of the S33 if you need a new cable modem so you can take advantage of higher upload speeds in your area, including when it becomes available in the future. Docsis 4.0 is coming (10gbps), but who knows when. This will take care of business until then.

Purchase the S34 to upgrade from a Surfboard 6190. Super fast speed and setup was quck! I would highly recommend ARRIS for your home network. The multi gig ethernet port came in handy. I will be increasing my internet speed with my cable company to take full advantage of the modem capabilities!

Don’t base your purchase on just the reviews here. Check the reviews on amazon and other places. This modem has so many disconnection issues. I wrote this review to warn others.