GIGABYTEGC-MAPLE RIDGE (Intel/Thunderbolt 4/ JHL 8540 Controller/ 2x USB Type-C/ 1x DisplayPort 1.4/ 2x Mini DisplayPort/ Max Bandwidth 40GB/s/ PCle Card)

7/9/22 - picked the Acasis TBU401 and had some issues with the drives I had on hand not hitting the speeds I was expecting. I ordered some cables and ruled that out as well after testing with 5 different cables with mediocre results. Dug into a ton of different reviews and found 3 drives options that worked at speeds expected i.e. 2700/2700. Sabrent Rocket / Samsung 980 Pro / WD SN770.I picked up a couple of the SN770 1TB models and tested them on my laptop and there was a huge difference in speeds vs the 2 Phison E112 drives and my SN850 even.So, the 770's in the Acasis TBU401 w/ provided cable and a cheap $10 cable are hitting 3GB/s R/WThere's a bit of a quirk though when hot plugging things that I'm still looking into on Linux but, my laptop using W11 hot plugging works just fine so, it seems there's a bus/driver quirk in Linux causing it to require a reboot to see the drive.The GCMR card itself works as expected with proper devices being connected to take full advantage of the speeds TB provides. I've noticed though the JHL8540 seems to produce faster results than whatever everyone is testing with by ~300MB/s on the read side and ~200MB/s on the write side./////////////////////////////////////////Bought a used one as a gamble for $60 here and have been looking into the option to add TB4 by digging into the specs of different cards since there's only 3 ASRock / GB / ASUS to choose from it was easy.ASR / GB TB4 cards both use a 5-pin cable to the MOBO header which ruled out the ASUS which is 14-pin for some reason. The additional 3-pin header GB uses doesn't seem to have any documentation anywhere even from GB.The GB card though offers 100W charging w/ 2 x 6 pin PCIE cables from the PSU which can be useful if you have a higher power demand device you want to charge off your desktop w/o yet another USB adapter plugged into the wall.The hesitation comes from each option from the 3 players should be ignored other than Asus which only works with Asus. The other thing is these cards regularly retail for ~$170 across the brands which is way too high for a couple of ports.Anyway.... some caveats.... I put the card in / added the 5-pin / USB cables + power and booted it up. I saw it showing up in the dmesg logs while booting on Linux and thought nothing more of it. I tested the ports with my phone and a USB-C drive to see if they lit up on the ports and they did.I didn't have time to poke around and actually look at it deeper than that and then came back to it to dig in a bit more wondering why the BIOS didn't have any TB options and dug into the manual and found which menu to go under to find them. So, I activated all the options regardless of the need / rebooted and tested again. This time looking at the syslog messages that popup when you add/remove a device to see what's going on from a technical standpoint. This time thought he phone gave me 3 options - charge only / data / something else.Syslog picked up more functions as well on each port. Also, being impatient the first time w/o the BIOS changes it seemed like one port wasn't producing power. Turns out it's more finicky on how it activates things. I flipped the connector on the cable and it worked... but I think it's more related to the hot plug ability of the ports needing some time to register the device.I still need to pick up a TB enclosure to test the bandwidth though.0c:00.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)0d:00.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)0d:01.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)0d:02.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)0d:03.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)0e:00.0 USB controller: Intel Corporation Thunderbolt 4 NHI [Maple Ridge 4C 2020]10:00.0 USB controller: Intel Corporation Thunderbolt 4 USB Controller [Maple Ridge 4C 2020]dmesg | grep -i Thunderbolt[ 0.834411] ACPI: bus type thunderbolt registered[ 0.834439] thunderbolt 0000:0e:00.0: enabling device (0000 -> 0002)Jun 30 17:01:41 server kernel: [ 1307.436287] usb 1-9: new high-speed USB device number 7 using xhci_hcdJun 30 17:01:41 server kernel: [ 1307.586253] usb 1-9: New USB device found, idVendor=22d9, idProduct=2771, bcdDevice= 4.19Jun 30 17:01:41 server kernel: [ 1307.586266] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3Jun 30 17:01:41 server kernel: [ 1307.586270] usb 1-9: Product: OnePlus 8 ProJun 30 17:01:41 server kernel: [ 1307.586273] usb 1-9: Manufacturer: OnePlusJun 30 17:01:41 server kernel: [ 1307.586276] usb 1-9: SerialNumber:Jun 30 17:01:41 server mtp-probe: checking bus 1, device 7: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9"Jun 30 17:01:41 server mtp-probe: bus: 1, device: 7 was not an MTP deviceJun 30 17:01:41 server colord[3837]: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/ColorManager/devices/sysfs__null_Jun 30 17:01:41 server mtp-probe: checking bus 1, device 7: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9"Jun 30 17:01:41 server mtp-probe: bus: 1, device: 7 was not an MTP deviceJun 30 17:01:49 server kernel: [ 1315.870749] usb 1-9: USB disconnect, device number 7Jun 30 17:02:09 server kernel: [ 1335.407967] usb 1-10: new high-speed USB device number 8 using xhci_hcdJun 30 17:02:09 server kernel: [ 1335.564359] usb 1-10: New USB device found, idVendor=22d9, idProduct=2771, bcdDevice= 4.19Jun 30 17:02:09 server kernel: [ 1335.564371] usb 1-10: New USB device strings: Mfr=1, Product=2, SerialNumber=3Jun 30 17:02:09 server kernel: [ 1335.564375] usb 1-10: Product: OnePlus 8 ProJun 30 17:02:09 server kernel: [ 1335.564379] usb 1-10: Manufacturer: OnePlusJun 30 17:02:09 server kernel: [ 1335.564381] usb 1-10: SerialNumber:

Installed this on AMD Gigabyte Aorus X570 Ultra motherboard that is compatible with previous generation Titan Ridge (Thunderbolt 3) controller. While it got detected just fine, Intel's Thunderbolt center refuses to authorize external GPU enclosure, suggesting that the pcie tunneling is not enabled in BIOS!!! Even if you set the device authorization to no security and actually enable the tunneling, still no go. My understanding is that TB4 requires Intel chipset DMA protection and VT-d.... This sucks, because I ended up ultimately buying the Titan Ridge TB3 and it works well on my motherboard. Major regression from Titan Ridge. If you are shopping for eGPU enclosure-compatible card for AMD boards, get the Titan Ridge version instead.. be prepared for the dreaded Code 12, it is fun to get around it on Windows. The value for the money on this thing is negative to me personally. I was too lazy to return it, maybe would plug into some other Intel board. This vendor locking to Intel chipset on TB4 is seriously a major regression from TB3, and just plain money grab.

After doing lots of research digging through forums, reading websites, etc., I figured I'd take advantage of a Black Friday deal and gamble on putting thunderbolt 4 on my AM5 platform. This card will certainly work provided you have the right motherboard.SpecsCORSAIR 7000D AIRFLOW Full-Tower ATX PC Case, BlackGigabyte X670E Aorus Master on bios f13AMD 7950X CPU128 GB of CORSAIR VENGEANCE DDR5 RAM 64GB (2x32GB) - Black (CMK64GX5M2B5200C40)Galax GeForce RTX™ 4090 SGMEG Ai1300P PCIE 5 & ATX 3.0 Power Supply - Full Modular - 80 Plus Platinum Certified 1300WADT-Link PCI Express 4.0 x4 to x4 Extension Riser Cable (20cm, K22SF-TL)GIGABYTE GC-MAPLE RIDGE (Intel/Thunderbolt 4/ JHL 8540 Controller)Since the RTX 4090 is a massive 3.5 slot space hog (great performer though), I couldn't put the TB4 card in the second slot (the only one left with the correct bandwidth) without completely blocking one of the GPU's intake fans (there's like 0.15" clearance). So, I installed a 4x pcie riser cable to move the TB4 card out away from the MB and into the pc case's vertical mount space normally reserved for mounting the GPU in a vertical orientation. This is where using a GOOD pcie riser cable is mandatory. Signal integrity goes down rapidly for every inch of extra travel. The one listed above is specifically rated and tested for PCIe 4.0 at 4X at a 20cm length, which is sufficient for two ports of TB4.Anyway, aside from some fitment tweaking I have left to do to get the TB4 card to mount nicely in the case's vertical slot (the power supply shroud is blocking an optimal positioning for the card), it was a fairly painless process so long as your MB has the correct header for thunderbolt.The add in card has both the 5 pin and 3 pin types. For the X670E Aorus Master, it just needs the 5 pin. You'll also need a free USB 2.0 header slot (there's two on the bottom edge for this MB) as well as two 6 pin power leads if you want 100W power as well (did not use that feature as my devices are self powered).The f13 bios automatically detected the thunderbolt device on post, but if not, be sure to enable it in the advanced settings menu (it differs from board to board, but it's fairly self evident by just going through the menu items until you see it. On older boards / bios the menu text might state "titan ridge" instead of "maple ridge", it's fine, it's just menu text, but might want to update bios to latest just in case). Also, be sure to download and install the correct drivers from Gigabyte prior to connecting anything to the card. You'll know you've got it right when the Thunderbolt Control Panel pops up.Currently it's driving some external NVMe enclosures (2 GBs+ all day long), but I also tested with my Solid State Logic audio interface, and my buddy's Apollo Twin. The SSL was effortless, (no surprise there as it's primarily just a good instrument DAC with no additional onboard processing). The Apollo was very, very finicky, but after spending some time tweaking the pre-fetch payload (256MB) in bios along with various latency adjustments, it finally worked well enough for us to both jam simultaneously. Nice interface, but dang is it expensive. Definity sticking with the SSL.I do not use the display daisy chain feature, because the RTX 4090 is capable of pushing multiple monitors with ease, so I can't comment on that function. But as a USB4 / TB4 storage or audio interface option, it works like a champ with my current setup.Good luck!