I have a Mac Air and I am trying to connect it to 2 monitors. I purchased a hub which I have both HDMI cables to the monitors and the hub plugged into the mac air. Only one of the screens is showing my desktop. Any suggestions>?

I would think the sad part here is that the Intel-based 2020 MacBook Air could support two external display. However, Apple removed that capability with the 2020 M1 model.

If you purchased the M1 version within the last 14 days, you should return it for a full refund as it doesn't meet your display support requirements.

Ref:

• MacBook Air (Retina, 13-inch, 2020) - Technical Specifications

Video Support 

Simultaneously supports full native resolution on the built-in display at millions of colors and: 

• One external 6K display with 6016-by-3384 resolution at 60Hz at millions of colors, or
• One external 5K display with 5120-by-2880 resolution at 60Hz at millions of colors, or
• Up to two external 4K displays with 4096-by-2304 resolution at 60Hz at millions of colors

• MacBook Air (M1, 2020) - Technical Specifications

Video Support 

Simultaneously supports full native resolution on the built-in display at millions of colors and: 

• One external display with up to 6K resolution at 60Hz

it is a disgrace that after expending big money in products that are in theory high Apple quality, we cannot do simple tasks as connecting more than 1 external monitor to our very expensive Apple laptop.... not acceptable. Apple - wake up!

TxikiBee wrote:

it is a disgrace that after expending big money in products that are in theory high Apple quality, we cannot do simple tasks as connecting more than 1 external monitor to our very expensive Apple laptop.... not acceptable. Apple - wake up!

Read the product specifications before buying. Do you buy a car without looking at the manufacturers equipment sticker first?

If you have a M1 Mac it only supports one external monitor.

I wouldn’t expect to have to check in the product specification if the car comes with wheels.