In comparison to its 2019 Mac Pro predecessors, the Mac Pro M2 Ultra line looks nearly identical from the outside, but it uses a completely different internal architecture -- based on Apple Silicon rather than Intel -- and has significantly less internal expansion. For all practical purposes, the Mac Pro M2 Ultra series is a Mac Studio in a larger box with more ports, support for internal storage upgrades, PCIe slots, and a larger power supply.
This specific Mac Pro, the Mac Pro "M2 Ultra" 24-Core CPU/76-Core GPU -- features a 3.68 GHz Apple M2 Ultra processor with twenty four cores (sixteen performance cores and eight efficiency cores), a 76-core GPU, a 32-core Neural Engine, a "Media Engine" that provides hardware acceleration for video encoding and decoding, 64 GB of "unified" onboard RAM, and a 1TB SSD that officially can be upgraded later.
External connectivity options include two Thunderbolt 4 ports on the top and four Thunderbolt 4 ports on the back along with two USB-A ports, two HDMI ports, two 10-Gigabit Ethernet ports, and a 3.5 mm headphone jack. It has 802.11ax (Wi-Fi 6E) and Bluetooth 5.3, too.
Internal connectivity options include one USB-A port and two Serial ATA ports too as one half length x4 PCI Express Gen 3 slot occupied by an Apple I/O card and six full-length PCI Express Gen 4 slots (two x16 slots and four x8 slots).