Spectrum upgraded my connection recently to 100/10 (Louisville, KY area). I had an SB6183 and the download speed was around 65 Mb/s. They sent me a new modem and the speed went to right at 100 Mb/s.
If a SB6183 couldn't do 100 Mb/s, I think there's no way a SB6141 could do 300 Mb/s, so yeah, I'd get Spectrum to send you a new one. They mailed mine at no cost and I self-installed it (without going through their stupid phone app; I had to call them instead).
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Spectrum upgraded my connection recently to 100/10 (Louisville, KY area). I had an SB6183 and the download speed was around 65 Mb/s. They sent me a new modem and the speed went to right at 100 Mb/s.
If a SB6183 couldn't do 100 Mb/s, I think there's no way a SB6141 could do 300 Mb/s, so yeah, I'd get Spectrum to send you a new one. They mailed mine at no cost and I self-installed it (without going through their stupid phone app; I had to call them instead).