Compute Module 4S
Based on the Raspberry Pi 4 Model B architecture, Compute Module 4S is intended for specific industrial customers migrating from Compute Module 3 or Compute Module 3+ and is not for general sale. For new customers who are designing products, we recommend using Raspberry Pi Compute Module 4.

Specifications
Broadcom BCM2711 quad-core 64-bit Cortex-A72 (Arm v8) at 1.5GHz
1GB LPDDR4-3200 SDRAM with ECC
Options for 8GB, 16GB, or 32GB eMMC flash
Option for 0GB eMMC Flash (CM4SLite only)
1 × USB 2.0 port (high speed)
46 × GPIO signals
1 × SDIO 2.0 (CM4SLite only)
1 × HDMI 2.0 port (up to 4Kp60 supported)
1 × 2-lane MIPI DSI display interface
1 × 4-lane MIPI DSI display interface
1 × 2-lane MIPI CSI camera interface
1 × 4-lane MIPI CSI camera interface
1 × composite TV out (PAL or NTSC)
H.265 (HEVC) (up to 4Kp60 decode), H.264 (up to 1080p60 decode, 1080p30 encode)
OpenGL ES 3.0 graphics
Obsolescence Statement
Compute Module 4S will remain in production until at least January 2031