These are slow by modern standards, but adequate for MP3 playback and photo storage.
To read or transfer data from a Nokia N73 memory card, you need a reader compatible with the format . While the N73 was a multimedia powerhouse of its era, its reliance on the now-rare miniSD standard (which is physically larger than microSD but smaller than standard SD) requires specific hardware or adapters for modern connectivity. Core Specifications for Nokia N73 Memory
This is the fastest and most reliable method.
The N73 had Bluetooth 2.0. You can send files wirelessly, but transferring a folder of 3MP photos via Bluetooth on 2006 hardware is painfully slow. Only use this if you are transferring one or two files.