Here’s something I didn’t know. Through System → Storage → Disks & volumes, Windows 11 makes all kinds of storage device info available. Indeed, such Windows 11 Disks & Volumes info (see lead-in graphic) even includes “Drive Health” for suitably-equipped devices. Let’s explore a little bit more about what that means. But first, take another look at the graphic above.

Digging Into Windows 11 Disks & Volumes Info

What can you see in this graphic? The first section shows disk info for the internal SSD, a 1 TB Kioxia NVMe. It also shows bus, target and logical unit number (LUN 0) data. There’s a Status field that shows the drive is online. Next, a Health section shows remaining life, available spare, and temperature. Finally, Partition Style shows up as GUID Partition Table (GPT). Previously, garnering this info required accessing Disk Management and Device Properties. Fabu!

In fact, if you click on Advanced Disk Properties, the same Properties page you can access through those other utilities comes up. But to me, that’s not what’s most interesting. Turns out, older USB attached devices (USB 3.x, in my local case) do not show the Drive Health section. That only works for USB4 devices (including Thunderbolt 4 items, as USB4 is a strict subset of TB4).

Now I Get It, Yet Again

Once again, I’m seeing a tangible improvement in transparency and usability when plugging in newer and more capable (but also more costly) USB4 peripherals. Even on laptops like the 2022 vintage Lenovo ThinkPad P1Gen6 Mobile Workstation (which still relies on the Thunderbolt Controller not a USB4 Host Router) these benefits convey.

As I said before in an earlier blog post “NOW I get it.” The value of the new interface is starting to come ever clearer. When I talk to the Panasonic engineers in a few minutes, I hope I will learn more. Stay tuned!

{Note Added 4 Hours Later] None of the engineers or developers I talked to was conversant with the switchover from Thunderbolt to USB4 Host Router at the hardware level. They’re floating a discreet inquiry to the Japanese engineering team to find out more. When I get more info, I’ll share it here (or in a new post, as things unfurl). Again: stay tuned!

I just learned something very interesting. Most of it comes courtesy of the GitHub HWiNFO project.  Use it to garner system information and diagnostics in Windows. The lead-in graphic  shows a  Thunder-bolt 4 NVMe enclosure plugged into a Panasonic Toughbook FZ-55. There (upper right) it appears as a Crucial NVMe SSD with PCIe x4 controller. For reasons I am about to reveal, I believe HWiNFO bestows USB4 insight into the USB-C connection in use.

What HWiNFO Bestows USB4 Insight Means

That insight comes from the full text of the Drive Controller info. It reads “NVMe (PCIe x4 8.0 GT/s @x4 8.0 GT/s). That means the PC sees the external drive, plugged in through a USB-C port on the FZ-55 as a PCIe x4 device capable of up to 8 giga-transfers per second (that latter part is what 8.0 GT/s means).

Basically, rating throughput in GT/s gives drive makers a way to account for encoding overhead in the PCIe protocol. Note: 8 GT/s translates into 7.877 Gbps with overhead backed out. Indeed, what this really means is the connection clocks half the maximum speed per PCIe x4 lane (16 GT/s). To me that indicates this connection tops out at a nominal 10 Gbps ( aka USB 3.2 Gen 2×1).

Where USB4 Comes Into Play

This is where I finally get to see a feature in Windows 11 I’ve read about but hasn’t manifested on PCs in my possession. The Toughbook FZ-553 delivered just before Christmas displays a USB option labeled “USB4 Hubs and Devices” (see below).

If I hadn’t seen the PCIe x4 stuff in HWiNFO, I’d never have looked for this!

Indeed, it was seeing the mention of a visible NVMe controller and its PCIe x4 details in HWiNFO that led me to start wondering about USB4 and related Thunderbolt support. On other (older) PCs, I’ve only been able to access info about USB4 and Thunderbolt devices through the Intel Thunderbolt Control Center app. That’s been present by default on those other PCs with high-speed USB-C ports. On the FZ-55, Thunderbolt Control Center is absent. It doesn’t even come up in the Store (though it shows up clearly as a search string).

OK, NOW I get it: the Intel USB4 Host Router does on newer PCs what the Intel Thunderbolt Control Center does on older ones. It makes USB4 storage devices visible and accessible. Good to know!

Thankfully, HWiNFO shows more about the device, including the NVMe maker, controller, and drive model (a 1TB PCIe x4 Crucial NVMe drive). Likewise good to know; more insight, too!