I have the WLAN connection which is built into the WS. I use this. It works very well. I don't use Bluetooth. Don't know anything about the Bluetooth card

Yes, it is possible to install a DVD drive in the HP Z2 Tower G9 Workstation. - The device has a 5.25-inch external bay that is designed for the installation of an optical drive such as a DVD drive. - To install the DVD drive, you need to remove the access panel and then insert the optical drive into its bay, connect the SATA and power cables and secure the drive.

We will be happy to answer your questions. Please note that we are only the platform for such suppliers, similar to e.g. Riccardo or ebay. - The warranty can be registered with us in the shop as usual, but the third-party dealer is responsible for processing and handling. The warranty period is also 2 years as usual with us. - For dealers from DE, the keyboard will be DE and an EU power connection will be available. However, the supplier should include a fixed adapter, if this is forgotten, we can send you one from our warehouse. - We will not deliver the item. The product will be shipped directly from the retailer. If you have any problems, you can contact our customer service and we will take care of communication with the retailer and any necessary clarifications. In the event of legal cases or similar problems, however, the third-party provider is liable. I hope the answers help you.