Still waiting for support 48h after my first message. it doesn't work (mac or rpi4). tried all the instructions on wiki. what do i do? return it?

Dear Customer, Which email did you contact? It seems that we didn't receive email from you. Could you send an email for us on Amazon now? I will reply you right now. It will be better if you could send some images about the hardware connection. Our engineer team will help you to resolve the product problem.

Can the controller board be removed from the back and re-attached with a ribbon cable that way the display can lie flat on my project?

Seller answer is only HALF true. The PCB board requires *two* ribbon cables. One is a simple standard ribbon cable found on all these LCD screens. The other is a specialized cable that has ICs on it and CANNOT BE EXTENDED.

When connected to a pi 3 or pi 4, does the pi power the display or does both the pi and the display need their own power supply?

The screen is powered by what they list as the "touch port" in the photos. So if you plug the pi 4b usb port into the touch port on the screen, it will receive power using the Raspberry pi's power. I would suggest using an official Raspberry Pi power adapter, or at least one with higher than a 2.5a power rating. If you do not want to use the touch screen, then I believe you would have to have a separate power adapter to power the screen independantly. I have tested this on a RPi 4B.

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7.9inch Capacitive Touch Screen LCD Compatible with Raspberry Pi 5/4B/3B+/3A+/2B/B+/A+/Zero/Zero W/WH/Zero 2W CM3+/4 400×1280 Resolution HDMI IPS Supports Jetson Nano/Windows

Product ID: 213146028

Details

Aspect Ratio
Unknown
Brand
waveshare
Resolution
400 x 1280
Screen Size
7.9 inches
Screen Surface Description
Glossy

🎯400×1280 resolution

📺7.9-inch IPS display

🤏5-point capacitive touch

COP 648919

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Description

🚀 Elevate your Raspberry Pi setup with touchscreen brilliance!

UNIVERSAL COMPATIBILITY - Plug & play with Raspberry Pi 5/4B/3 series, Jetson Nano, and Windows 7-11 for ultimate versatility.
SHARP 400 1280 RESOLUTION - Enjoy crisp, portrait-mode clarity perfect for multitasking and vertical content viewing.
VIVID 7 9 INCH IPS DISPLAY - Experience crystal-clear visuals with wide 178° viewing angles for immersive coding or gaming sessions.
ENHANCED CONNECTIVITY AUDIO - HDMI video plus 3.5mm audio jack ensures rich multimedia experience in a sleek, compact form.
SEAMLESS 5 POINT TOUCH CONTROL - Effortlessly navigate with responsive, driver-free capacitive touch—ideal for professional workflows.

The Waveshare 7.9-inch Capacitive Touch Screen LCD offers a sharp 400×1280 IPS display with 5-point touch control, compatible across Raspberry Pi models, Jetson Nano, and Windows OS. Featuring HDMI and USB interfaces plus audio support, it’s a compact, driver-free solution designed for professionals seeking versatile, high-quality visual interaction.

Specifications

ASIN	B087CNJYB4
Additional Features	Touchscreen
Aspect Ratio	Unknown
Best Sellers Rank	#2,357 in Computer Monitors #2,655 in Single Board Computers (Computers & Accessories)
Brand	waveshare
Cable Length	7.9 inches
Color	7.9inch HDMI LCD
Compatible Devices	Raspberry Pi 5/4B/3B+/3A+/2B/B+/A+/Zero/Zero W/WH/Zero 2W, CM3+/4, Jetson Nano, Windows 11/10/8.1/8/7
Connectivity Technology	HDMI, USB
Contrast Ratio	1000:1
Customer Reviews	4.0 4.0 out of 5 stars (124)
Display Resolution Maximum	400 x 1280
Display Technology	LCD
Display Type	LCD
Hardware Connectivity	HDMI
Included Components	HDMI Port, USB Port, 3.5mm headphone/speaker jack.
Item Weight	0.01 kg
Manufacturer	Waveshare
Model Name	7.9inch HDMI LCD
Model Number	7.9inch HDMI LCD
Mounting Type	Panel Mount
Native Resolution	400×1280
Number of Component Outputs	1
Picture Quality Enhancement Technology	IPS
Pixel Pitch	0.28
Power Consumption	2 watts
Refresh Rate	60 hertz
Resolution	400 x 1280
Screen Finish	Glossy
Screen Size	7.9 inches
Shape	Rectangular
Specific Uses For Product	Gaming, Programming
Total Number of HDMI Ports	1
Total USB 3.0 Ports	2
Total Usb Ports	2
UPC	738628504692 614961956704
Unit Count	1 Count
Viewing Angle	178 degrees
Voltage	5 volts

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COP 648919

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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