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Broadcom.For a list of all currently documented Broadcom chipsets with specifications, see
NVG578 10G GPON Gateways
- NVG578S: XGS-PON Symmetrical 10/10 – Tri-band Wi-Fi or Dual-band
- NVG578: XG-PON Asymmetrical 10/2.5 – Tri-band Wi-Fi or Dual-band
- NVG578L: 2.5GPON – Tri-band Wi-Fi or Dual-band
Product literature makes it sound like this device is optionally dual-band or
- tri-band for all three variants. 802.11ax support may be optional as well.