1- slot PCI -E 1X to 3 slot 1X riser card with high speed USB cable. This adapter was designed to PCI -E 1X Expansion Kit 1 to 3 Ports Switch Multiplier Hub Riser Card +. SPONSORED Be the first to write a review. PCI express 1X to 1X 3. How do you know what version PCIe card or slot you have? These riser cards come for all types of PCI slots including PCIe, PCI -X, and conventional PCI (see Figure 3 ). To help you make sense of all this, Table 3 -4 sorts it all out. A+ Inserts in motherboard slot Right -angle slot for expansion card Figure. NotchinMiniPCIeslot and card Figure 3 A Mini PCI card has a notch near the side The riser card installs in the slot and provides another slot at a right angle. DD PCIe x16 to PCIe x16 Riser Card Interface: Add to watch list Remove from watch list. ARC1-PELYC7 Flexible dual PCIe riser, 1-slot PCIe x16 to 2-slots PCIe x8 in x16 slot. Powered by Enoch Systems. DDC7 2U 2 PCIe x16 with 7cm Ribbon Cable Interface: Orders received after 3: This riser is designed for chassis with three horizontal cutouts that line up with the typical slot 6 position of fight of motherboard.