Asrock B550m Pro4 - Hyper M.2 slot

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   Hi All,

I've recently installed a WD Black SN7100 on this motherboard and for some reason, it's only showing on the WD Dashboard Tool that it's only connected to a Gen 3 x4 PCIe slot, even if it's a PCIe 4.0 SSD. I'm only getting read speeds of up to 1300mbps and read speeds of up to 2300mbps.

Why is this the case when the MoBo says it should support PCIe Gen 4? Any help would be appreciated.

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OvRieL Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Apr 2025 Location: Philippines Status: Offline Points: 50	Post Options Post Reply Quote OvRieL Report Post Thanks(0) Quote Reply Topic: Asrock B550m Pro4 - Hyper M.2 slot Posted: 11 Apr 2025 at 11:22am
	Hi All, I've recently installed a WD Black SN7100 on this motherboard and for some reason, it's only showing on the WD Dashboard Tool that it's only connected to a Gen 3 x4 PCIe slot, even if it's a PCIe 4.0 SSD. I'm only getting read speeds of up to 1300mbps and read speeds of up to 2300mbps. Why is this the case when the MoBo says it should support PCIe Gen 4? Any help would be appreciated.

OvRieL Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Apr 2025 Location: Philippines Status: Offline Points: 50	Post Options Post Reply Quote OvRieL Report Post Thanks(0) Quote Reply Posted: 13 Apr 2025 at 2:18pm
	Hi ScottG,it's installed on the hyper m2 slot

eccential Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 10 Oct 2022 Location: Nevada Status: Offline Points: 6635	Post Options Post Reply Quote eccential Report Post Thanks(0) Quote Reply Posted: 14 Apr 2025 at 11:01pm
	What CPU are you using? If it's any of the APUs (e.g. 4700G, 5700G) or APU derived CPUs (e.g. 5500, 5700), then Gen.3 makes sense, because these APUs never supported PCIe Gen.4.

OvRieL Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Apr 2025 Location: Philippines Status: Offline Points: 50	Post Options Post Reply Quote OvRieL Report Post Thanks(0) Quote Reply Posted: 15 Apr 2025 at 4:02pm
	Hi, it's ryzen 5 5600x

eccential Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 10 Oct 2022 Location: Nevada Status: Offline Points: 6635	Post Options Post Reply Quote eccential Report Post Thanks(0) Quote Reply Posted: 15 Apr 2025 at 9:26pm
	5600X is Vermeer, so Gen.4 should work. Maybe BIOS is configured to do Gen.3? No idea.