diff --git a/udev/99-deepcool-digital.rules b/udev/99-deepcool-digital.rules
new file mode 100644
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+++ b/udev/99-deepcool-digital.rules
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+# SPDX-License-Identifier: GPL-2.0-or-later
+# udev rules for Deepcool Digital USB HID devices
+#
+# This file should be installed to /etc/udev/rules.d/99-deepcool-digital.rules
+#
+# After installation, reload udev rules:
+#   sudo udevadm control --reload-rules
+#   sudo udevadm trigger
+
+# Deepcool Digital devices (standard vendor ID 0x3633)
+# Allow access for plugdev group members
+SUBSYSTEM=="hidraw", ATTRS{idVendor}=="3633", MODE="0666", GROUP="plugdev", TAG+="uaccess"
+SUBSYSTEM=="usb", ATTRS{idVendor}=="3633", MODE="0666", GROUP="plugdev", TAG+="uaccess"
+
+# CH510-MESH-DIGITAL (different vendor ID 0x34d3)
+SUBSYSTEM=="hidraw", ATTRS{idVendor}=="34d3", ATTRS{idProduct}=="1100", MODE="0666", GROUP="plugdev", TAG+="uaccess"
+SUBSYSTEM=="usb", ATTRS{idVendor}=="34d3", ATTRS{idProduct}=="1100", MODE="0666", GROUP="plugdev", TAG+="uaccess"
+
+# Sysfs attributes for Deepcool Digital kernel module
+# Allow read/write access to configuration attributes
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{mode}="0666"
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{update_interval}="0666"
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{fahrenheit}="0666"
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{alarm}="0666"
+
+# Sensor attributes are read-only by default, but make them accessible
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{cpu_temp}="0644"
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{cpu_usage}="0644"
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{cpu_power}="0644"
+SUBSYSTEM=="hid", DRIVER=="deepcool_digital", ATTR{cpu_freq}="0644"
+
+# Alternative: Allow access only for specific users
+# Replace 'plugdev' with your desired group or add specific user:
+# SUBSYSTEM=="hidraw", ATTRS{idVendor}=="3633", MODE="0660", GROUP="deepcool"
+# SUBSYSTEM=="hidraw", ATTRS{idVendor}=="3633", MODE="0660", OWNER="yourusername"