1. Type Bluetooth in the Windows search box and then press Enter.2. Turn on Bluetooth, if it is off.3. Select a Bluetooth device, and then follow the on-screen instructions.Use the optical drive (for selected models)If your computer has an optical drive, read the following information.Know the type of your optical drive1. Type Device Manager in the Windows search box and then press Enter. Type the administrator passwordor provide confirmation, if prompted.2. Select an optical drive, and then follow the on-screen instructions.Install or remove a disc1. With the computer on, press the eject button on the optical drive. The tray slides out of the drive.2. Insert a disc into the tray or remove a disc from the tray, and then push the tray back into the drive.Note: If the tray does not slide out of the drive when you press the eject button, turn off the computer. Then,insert a straightened paper clip into the emergency-eject hole adjacent to the eject button. Use theemergency eject only in an emergency.Record a disc1. Insert a recordable disc into the optical drive that supports recording.2. Do one of the following:• Type AutoPlay in the Windows search box and then press Enter. Turn on Use AutoPlay for all mediaand devices.• Open Windows Media Player.• Double-click the ISO file.3. Follow the on-screen instructions.Use a media card (for selected models)If your computer has a SD-card slot, read the following information.12 ThinkCentre M70s Gen 4 ThinkCentre M90s Gen 4 User Guide