Logitech MX Master 3S Repair

The Logitech MX Master 3S was released in 2022 as the direct successor to 2019's MX Master 3. Physically identical, the 3S features three key upgrades over the MX Master 3:

1. Up to 90% quieter click noise. The "S" in 3S reportedly stands for "Silent."
2. Logi Bolt wireless technology instead of the Logitech Unifying receiver.
3. Higher resolution: 8000 dpi, up from 4000.

The Logitech MX Master 3S can be identified by the model number ("M/N") MR0077, or part numbers ("P/N") 810-008295, 810-008296, 910-006556, 910-006557, 910-006558, depending on region, vendor, and color. The model and part numbers can be found printed sideways on a large sticker on the mouse's underside. The device's serial number is also listed here, labeled "S/N."

Design and Connectivity

• 7 buttons, including scroll wheel and gesture button
• Wireless technology:
  • "Logi Bolt" USB receiver
  • Bluetooth 5.0

Sensor

• "Darkfield" Laser Sensor, 200-8000 dpi range

Battery

• Rechargeable (500 mAh) Li-Po
• 70 days of battery life (expected)

Dimensions:

• 2.0 x 3.3 x 4.9 inches (5.08 x 8.38 x 12.45 cm)
• 5.0 oz (142 g)

Logitech Support

Logitech: MX Master Series

Wikipedia: Logitech products

The Verge: Logitech MX Master 3S Review