There are various different versions, with different connectors 😉

https://en.wikipedia.org/wiki/Apple_Stu ... 80%932002)

CRT Apple Studio Displays in 17" (43 cm) and 21" (53 cm) sizes were introduced in January 1999 with VGA DE-15 connectors and "blueberry" and white exterior styling. In August 1999 the exterior styling was changed to "graphite" and white. In July 2000 the 21" model was dropped and the 17" changed to a striking "crystal clear" enclosure with ADC connector. Apple stopped selling CRT displays in May 2001.

Here you can find the exact specs and model numbers:
https://everymac.com/monitors/apple/studio_ci … o-displays.html

The two VGA models are very similar, the same Diamondtron tube with same specs/refresh rates. The later ADC model is marginally better (slightly higher refresh rates supported), but not worth the difference if you have to buy a USD 21 ADC-VGA adapter with it.

I considered one of the earlier ones when I was looking for a monitor, but found an Iiyama with basically the same Diamondtron innards as the last ADC studio display, but with VGA. It was also closer to home, cheaper and hardly used for 15 years 😀

I picked up a CRT 17" Apple Studio Display at Vintage Computer Festival SE as part of a good haul, but it's the version with the "graphite" G4 style casing and a standard DE-15 VGA connector. No problem using that one with any typical PC or modern Mac, though DA-15 Macs will need a simple pin adapter.
https://everymac.com/monitors/apple/studio_ci … splay_17_2.html

I quite like it, actually. It's not as big or as capable of fast refresh rates at higher resolutions as my GDM-5410 is, but it also doesn't exhibit the usual symptoms of unreliability that later FD Trinitron monitors do. The triple-leg stand also makes it easy to store things right underneath the monitor if you need more desk space, though it's too narrow to try and slide a full-size keyboard under there.

The ADC version looks pretty stylish, but it's not worth the hassle of dealing with ADC, especially seeing as it relies on the DVI-A pins. That limits compatibility noticeably compared to all the LCD ADC offerings.