Those Gen3 x1 slots are limited to 7.88Gbps so they are pretty pointless for anything beyond a sound card, and you only get a single Gen4 x4 slot. All the other x4 connections are taken up by M.2!
Want to add a capture card and a HBA? Not enough slots. Want to add a capture card and a 10G/25G NIC? Not enough slots. Want to add a capture card and a USB-C expansion card? Not enough slots.
> Those Gen3 x1 slots are limited to 7.88Gbps so they are pretty pointless
This reviewer tested the M.2 capture card with two 1080p60 signals that have a data rate of 3.2Gbps each, so a PCIe gen3 x1 slot would have been plenty of bandwidth for this use case (but not for capturing at 4k).
Don't make the mistake of believing that a device which has lots of PCIe lanes actually needs all of them active to fulfill its purpose and be useful.
Those Gen3 x1 slots are limited to 7.88Gbps so they are pretty pointless for anything beyond a sound card, and you only get a single Gen4 x4 slot. All the other x4 connections are taken up by M.2!
Want to add a capture card and a HBA? Not enough slots. Want to add a capture card and a 10G/25G NIC? Not enough slots. Want to add a capture card and a USB-C expansion card? Not enough slots.