4 x 4 slot ✓ ‎XPS 8960, PCIe x4 expansion warning

4 x 4 slot
The following image shows the PCI connections of the motherboard used in DuroPC's IMB540-4 Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x84 x 4 slot Add up to four NVMe SSDs using only one PCIe slot ⦁ Designed for use with 2280 form factor SSDs ⦁ Compatible with PCIe motherboards and backward

4 x 4 slotUniversal AGP slot , 2 PCI slots , and 4 Compatibility; 5 Power consumption; 6 Protocol AGP command codes

4 x 4 slot This slot can be used as x16, x8x8, x4x4x4x4 using Bifurcation In Case of my Truenas install a 4 x NVME Board was used with the x4x4x4x4