The MINISFORUM MS-S1 Max packs a lot of powerful features into the body of a relatively small desktop computer. It has an AMD Ryzen AI Max+ 395 Strix Halo processor and 128GB of high-bandwidth memory. And there’s a PCIe x16 slot inside the chassis (which is limited to PCIe 4.0 x4 speeds, but which supports full-length PCIe cards). One slot supports PCIe 4.0 x4, while the other is only a PCIe 4.0 x1 slot. But that’s likely because of the additional PCIe 4.0 x4 interface available for the x16 slot.