More Tips for Using Q1: How to adjust the font of extender monitor? A : Display settings > System > Display > Scale & layout (1. Selected the monitor you need to adjust; 2. Choose the appropriate percentage) Q2: How to fix it if the screen is upside down? A : Display settings > System > Display > Scale & layout > Display orientation (Switch to "Landscape(flipped)") Q3: Why is only one screen works and the other is not? Make sure you connect the ports correctly. For USB-C port connection, both ports on your laptop should be full-featured USB-C(USB C 4.0, Thunderbolt 3/4, DP 1.2/1.4/2.1)ports, check the symbol on it. And for HDMI port connection, you must use 2 cables to connect.( one HDMI for video transmission and one USB-A cable for power supply). Q4 : What should I do when "Flickers & Black Screen" happen? A : Caused by low battery or insufficient voltage of your laptop, try an external 5V/2A adapter with cable to offer power for monitor. Q5: Is this setup compatible with the MacBook? For MacBook, LXU laptop screen extender supports M4, all series of Pro & Max chips, But not for M1/ M2/ M3 Chips. Please confirm with us if you don't make sure the compatibility of your laptop. 14“ Triple Screen Laptop Monitor Extender 15.6“ Triple Screen Laptop Monitor Extender Buying Options Add to Cart Customer Reviews 3.5 out of 5 stars 34 4.2 out of 5 stars 27 Price $209.99$209.99 $299.99$299.99 Screen Size 14 inches 15.6 inches Aspect Ratio 16:10 16:9 Resolution FULL HD 1200P FULL HD 1080P Refresh Rate 60 Hz 60 Hz Display Technology IPS IPS Applicable Size Range 12~16.2" 12~17.3" Driver Download NO NO Plug & Play YES YES Weight 3.55 Lbs 4.19 Lbs Compatible Systems Windows/Android/Chrome/Linux/Mac (Not for M1/M2/M3/ Chips) Windows/Android/Chrome/Linux/Mac (Not for M1/M2/M3/ Chips)