PCIe bus speed: PC Talk Forum

The PCIe x8 Gen3 backplane supports a PCIe Gen3 target cable adapter installed in the OSS target slot and up to one or more PCIe x16 expansion cards

The PCIe cards are available in different sizes and rated as X1, X4, X8, X16 The smaller cards will fit perfectly in the larger slots but not vice-versa

10 228022110 NVMe SSD slot x1 228022110 NVMe SSD slot x1 Memory expansion 1* PCIe x16 slot 1 x MS-01 main unit 1 x

1429 uncharted seas slot free play 1 x PCIe x16 PCIe x16 2 x PCIe x16 1 x PCIe x16 Slots, Multi-GPU, Graphics, Audio, Network, RAID, SATA3, SATA2, SATA Express