# Peripheral Connection Options Keys used to pass options when connecting to a peripheral. ## Topics ### Options [`CBConnectPeripheralOptionEnableAutoReconnect`](/documentation/CoreBluetooth/CBConnectPeripheralOptionEnableAutoReconnect) A Boolean value that specifies whether the system automatically reconnects with a peripheral. [`CBConnectPeripheralOptionEnableTransportBridgingKey`](/documentation/CoreBluetooth/CBConnectPeripheralOptionEnableTransportBridgingKey) An option to bridge classic Bluetooth technology profiles, if already connected over Bluetooth Low Energy. [`CBConnectPeripheralOptionNotifyOnConnectionKey`](/documentation/CoreBluetooth/CBConnectPeripheralOptionNotifyOnConnectionKey) A Boolean value that specifies whether the system should display an alert when connecting a peripheral in the background. [`CBConnectPeripheralOptionNotifyOnDisconnectionKey`](/documentation/CoreBluetooth/CBConnectPeripheralOptionNotifyOnDisconnectionKey) A Boolean value that specifies whether the system should display an alert when disconnecting a peripheral in the background. [`CBConnectPeripheralOptionNotifyOnNotificationKey`](/documentation/CoreBluetooth/CBConnectPeripheralOptionNotifyOnNotificationKey) A Boolean value that specifies whether the system should display an alert for any notification sent by a peripheral. [`CBConnectPeripheralOptionRequiresANCS`](/documentation/CoreBluetooth/CBConnectPeripheralOptionRequiresANCS) An option to require Apple Notification Center Service (ANCS) when connecting a device. [`CBConnectPeripheralOptionStartDelayKey`](/documentation/CoreBluetooth/CBConnectPeripheralOptionStartDelayKey) An option that indicates a delay before the system makes a connection. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)