We would like to mention that this model of motherboard is outdated and support for it is very limited. Interactive support would not be available in case there were any issues during installation.
Intel has different models of wireless adapters for desktops, they are available in Add-in-card form factor, and require a Standard PCIe x1 slot.
Checking the Intel® Desktop Board DQ45CB Specifications, it has two PCIe x1 Gen 2.x slots. So it should be able to use different Intel wireless adapters for desktops. Keep in mind that the Operating System is also important to determine compatibility, however, you did not provide this information.
- Intel® Centrino® Advanced-N 2200 for Desktops: Intel® Centrino® Advanced-N 2200 for Desktops: Product Brief
- Intel® Centrino® Advanced-N 6205 for Desktop: Intel® Centrino® Advanced-N 6205 for Desktop: Product Brief
- Intel® Dual Band Wireless-AC 7260 for Desktop: Intel® Dual Band Wireless-AC 7260 for Desktop: Product Brief
Another option is to get a USB wireless adapter, however, Intel does not manufacture this type of adapters.
Here is a link to a thread with a similar topic: wireless connection with D915GAV motherboard