1. Touch screen expansion board + interface expander: The touch screen expansion board and an additional interface expander, with Gigabit Ethernet port, M.2 slot for connecting communication module or SSD, and more USB ports.
2. 2.8 inch display with 5-point capacitive touch control, better touch experience from the fully laminated screen, together with 6H toughened glass panel, more safe to use
3. Touch Screen Expansion Board Introduction:
- CM4 socket: Suitable for all variants of Compute Module 4
- USB: USB 2.0 x 1
- Connector: MIPI CSI 22PIN 0.5mm camera connector
- Display: 2.8 inch fully laminated screen, 480 x 640 pixels, 5-point capacitive touch, toughened glass panel
- Video: Micro HDMI x 1, supports 4K 30fps output
- Storage: MicroSD card socket for Compute Module 4 Lite (without eMMC) variants
- Power input: 5V
4. Interface Expander Introduction
- Networking: Gigabit Ethernet RJ45; M.2 M KEY, support NVME SSD or communication module
- USB: USB 2.0 x 3

Package list:
1. Touch screen expansion board x1
2. Screws pack x1
3. Interface expander x1