Other OTG Support and Compatibility

  1. zepedropaulos
    The Lab - OnePlus 6T Reviewer Aug 14, 2020

    zepedropaulos , Aug 14, 2020 :

    I'm trying to connect several external drives to my OP7T:
    I tried with the following different drives and tried coyping a ~1GB test folder with photos, with OTG option turned on.
    • External NVMe SDD Enclosure: Asus ROG Arion (with 512GB) - Using Type-C to Type-C cable.
    • External HDD Enclosure: 2.5' WD (2TB) - Using Type-C to USB-A adapter.
    The HDD perfectly transfer files. However, the SSD whilst sometimes recognized, seems not be properly powered (light blinks after a few seconds of after the file transfer starts and keeps connecting and disconnecting). I'm assuming that being a NVMe drive, it could require more power, but it works flawlessly with my old Samsung phone (S7 edge), with a Huawei Mate 20 Pro, and obviously with the PC. The OP6T also seems unable to power it properly. Already tried formatting the drive in exFAT, NTFS, FAT32, etc.

    Tried to measure the power both devices were drawing from the phone and PC:

    HDD Idle @ OnePlus 7T = ~4.80V/0.51A = ~2.45W
    HDD Writing @ OnePlus 7T = ~4.80V/0.57A = ~2.74W
    HDD Idle @ PC = ~4.90V/0.15A = ~0.74W
    HDD Writing @ PC = ~4.80V/0.55A = ~2.64W

    SSD Idle @ PC = ~4.90V/0.45A = ~2.21W
    SSD Writing @ PC = ~4.90V/0.53A = ~2.60W

    Anyone ever tried to connect an external NVMe via OTG?
    How does it behave?