Is a Mac air M1 compatible with a DELL S2721HN 27-inch FHD IPS Flat Monitor

Dell's Web site indicates that this is a 27" monitor with 1920x1080 resolution and two HDMI inputs.

https://www.dell.com/en-us/shop/dell-27-monitor-s2721hn/apd/210-axjy/monitors-monitor-accessories

No (Mini) DisplayPort or USB-C inputs, so if it will work with the M1 MacBook Air, you would need a USB-C to HDMI adapter, or adapter cable, to connect the two. (Amazon carries a lot of brands of those.)

Hi there!

It would be best to contact Dell, the third-party vendor for this product.

Support | Dell US

Hope this helps!

Jack