Hey Makers!
Had a few questions about this recently, so thought I’d share a post on it for everyone to be able to see 
Just a heads up about dual-band support for the Raspberry Pis (i.e. 2.4GHz and 5GHz network compatibility)
The only boards that provide 5GHz support are at this time are the:
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Raspberry Pi 4 B (all variants)
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Raspberry Pi 3 A | B + (note the +)
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Compute Module 4 Wireless
None of the Zeros including the Zero 2W, or older models or Pi before and including the Pi 3 B, nor the CM3 (which don’t have wireless cards) support dual band WiFi natively, any that have wireless capabilities are limited to channels in the ~2.4GHz band. You may be able to use a USB adaptor with the appropriate drivers for your device and OS to get around this such as this one, but be sure to check compatibility first:
