Spectrum doesn't charge rental fees for modems, so why not take their "free" modem, have it set to bridge mode, and use your own router? This way, any modem issues that arise are their responsibiity to fix.
If you want a good 400 approved modem...the CM600. But as already mentioned, if you are waiting for customer owned modems to be approved for gig, I would wait.
I personally have the 6190 on 400 and it works great for me. I am not an extensive online gamer, no video conferencing, or any other latency sensitive activities.
dstoffa, is not “free” because they’ll charge you a $5 WiFi monthly fee if you get their modem and their modems are usually combo modem/WiFi which I avoid. I already have an excellent Asus router I plan to stick with.
The modem is included...wifi is $5 extra which you can have them waive if you want to use your own router.
Just wanted to clarify that if you subscribe to Ultra or Gig there is no charge for wireless.
For the other packages there is a $5.00 fee for that.
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If I was making the 400 Mbps modem selection today, I would take Spectrum's 400 Mbps gateway box in bridging mode (at zero monthly charge) and buy my own Gigabit router with AC1900 Tri-Band WiFi and Multiple Stream Beam Forming. It will have four or six ugly but efficient external antennas. Spectrum has not approved any Gigabit modems for customer purchase at this time.