my driver entitlements file originally looked like this: <dict> <key>com.apple.developer.driverkit</key> <true/> <key>com.apple.developer.driverkit.family.hid.device</key> <true/> <key>com.apple.developer.driverkit.transport.usb</key> <array/> <key>com.apple.developer.driverkit.allow-any-userclient-access</key> <true/> </dict> but I also tried this <dict> <key>com.apple.developer.driverkit</key> <true/> <key>com.apple.developer.driverkit.transport.usb</key> <array> <dict> <key>idVendor</key> <integer>*</integer> <!-- I've also tried hex and decimal values here. Wildcard was a last ditch hope --> </dict> </array> </dict> to no effect. The driver's Info.plist originally looked like this: <dict> <key>CFBundleShortVersionString</key> <string>1.0</string> <key>CFBundleVersion</key> <string>1</string> <key>IOKitPersonalities</key> <dict> <key>MyBatteryDriver</key> <dict> <key>CFBundleIdentifier</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>CFBundleIdentifierKernel</key> <string>com.apple.kpi.iokit</string> <key>IOClass</key> <string>IOUserService</string> <key>IOMatchCategory</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>IOProviderClass</key> <string>IOUserResources</string> <key>IOResourceMatch</key> <string>IOKit</string> <key>IOUserClass</key> <string>MyDriver</string> <key>IOUserServerName</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>UserClientProperties</key> <dict> <key>IOClass</key> <string>IOUserUserClient</string> <key>IOUserClass</key> <string>StatusUserClient</string> </dict> <key>idVendor</key> <integer>0x0000</integer> <!-- showing the format, but not the actual vendor or product ID --> <key>idProduct</key> <integer>0x0000</integer> </dict> </dict> <key>OSBundleUsageDescription</key> <string>Driver description</string> <key>OSBundleUsageDescriptionKey</key> <string>This application is trying to install a driver.</string> </dict> But I also tried this <dict> <key>CFBundleShortVersionString</key> <string>2.0</string> <key>CFBundleVersion</key> <string>2</string> <key>OSBundleUsageDescriptionKey</key> <string>This application is trying to install a driver.</string> <key>OSBundleUsageDescription</key> <string>Driver description</string> <key>IOKitPersonalities</key> <dict> <key>MyBatteryDriver</key> <dict> <key>CFBundleIdentifier</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>CFBundleIdentifierKernel</key> <string>com.apple.kpi.iokit</string> <key>IOClass</key> <string>IOUserService</string> <key>IOMatchCategory</key> <string>IOUserService</string> <key>IOProviderClass</key> <string>IOUserResources</string> <key>IOResourceMatch</key> <string>IOKit</string> <key>IOUserClass</key> <string>MyDriver</string> <key>IOUserServerName</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>UserClientProperties</key> <dict> <key>IOClass</key> <string>IOUserUserClient</string> <key>IOUserClass</key> <string>StatusUserClient</string> </dict> <key>idVendor</key> <integer>2222</integer> <!-- again showing the format, which was the hex value converted to decimal --> </dict> </dict> </dict> to also no effect.