Quad Hat - Disks immediately ejecting - Quad Hat - Raspberry Pi 4B

Hi,
I have set up a Quad Hat with a 65W power supply with my Raspberry Pi on Raspbian and 1x 3.5" HDD.
When starting the Radxa service the drive gets mounted, but then 1-2 seconds later are dismounted and I get an “Error mounting /dev/sda2 at /media/pi/[name]: Unknow error when mounting /dev/sda2” message.

I have tested using different power supplies, using 4 drives, using 1 drive.
If I am very quick I am able to open the drive before it ejects and the folders are there.

Any ideas on what to check next?

Results from dmesg:

[ 2058.807112] usb 2-2: new SuperSpeed Gen 1 USB device number 3 using xhci_hcd
[ 2058.838558] usb 2-2: New USB device found, idVendor=152d, idProduct=0561, bcdDevice=81.36
[ 2058.838578] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=5
[ 2058.838594] usb 2-2: Product: External Disk 3.0
[ 2058.838609] usb 2-2: Manufacturer: JMicron
[ 2058.838624] usb 2-2: SerialNumber: RANDOM__3F4917AD758C
[ 2058.848802] scsi host0: uas
[ 2058.850293] scsi 0:0:0:0: Direct-Access JMicron Tech 8136 PQ: 0 ANSI: 6
[ 2058.852120] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 2058.853399] sd 0:0:0:0: [sda] 35156656128 512-byte logical blocks: (18.0 TB/16.4 TiB)
[ 2058.853680] sd 0:0:0:0: [sda] Write Protect is off
[ 2058.853698] sd 0:0:0:0: [sda] Mode Sense: 67 00 10 08
[ 2058.854268] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
[ 2058.855112] sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes
[ 2058.942995] Alternate GPT is invalid, using primary GPT.
[ 2058.943045] sda: sda1 sda2
[ 2058.947167] sd 0:0:0:0: [sda] Attached SCSI disk
[ 2067.158438] usb 2-2: USB disconnect, device number 3
[ 2067.237894] blk_update_request: I/O error, dev sda, sector 28160002344 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
[ 2067.238045] blk_update_request: I/O error, dev sda, sector 28160002344 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238070] Buffer I/O error on dev sda2, logical block 296, async page read
[ 2067.238145] blk_update_request: I/O error, dev sda, sector 28160002345 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238166] Buffer I/O error on dev sda2, logical block 297, async page read
[ 2067.238235] blk_update_request: I/O error, dev sda, sector 28160002346 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238254] Buffer I/O error on dev sda2, logical block 298, async page read
[ 2067.238330] blk_update_request: I/O error, dev sda, sector 28160002347 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238350] Buffer I/O error on dev sda2, logical block 299, async page read
[ 2067.238417] blk_update_request: I/O error, dev sda, sector 28160002348 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238436] Buffer I/O error on dev sda2, logical block 300, async page read
[ 2067.238506] blk_update_request: I/O error, dev sda, sector 28160002349 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238526] Buffer I/O error on dev sda2, logical block 301, async page read
[ 2067.238592] blk_update_request: I/O error, dev sda, sector 28160002350 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238612] Buffer I/O error on dev sda2, logical block 302, async page read
[ 2067.238683] blk_update_request: I/O error, dev sda, sector 28160002351 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238702] Buffer I/O error on dev sda2, logical block 303, async page read
[ 2067.238820] blk_update_request: I/O error, dev sda, sector 28160002344 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 2067.238840] Buffer I/O error on dev sda2, logical block 296, async page read
[ 2067.238912] Buffer I/O error on dev sda2, logical block 297, async page read
[ 2067.296648] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 2067.928065] sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=0x07 driverbyte=0x00

Edit:
lsusb

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Edit: The same happens when trying to mount a single SSD (so very unlikely to be power supply).

Hi, Hatter

Please check if the USB bridge is plugged in tightly. In addition, you can find a portable hard drive to test the USB interface of the Raspberry Pi.